20/20 - Episode Guide

At age 24, British model Katie Piper seemed to have it all, stunning beauty, a non-stop social life and a growing career as a print and television personality in England. But in a shocking moment filmed entirely by security cameras on a busy London street, Katie was doused with sulfuric acid by a complete stranger. Her face and body were badly burned, and any hope of continuing her life as a model was over. Worse, Katie suspected that the attack had been orchestrated by a new boyfriend. But why would someone do this?

Andrew Young, a former longtime aide and trusted friend of Senator John Edwards, sat down for an exclusive interview with ABC News correspondent Bob Woodruff regarding his upcoming memoir, The Politician: An Insider Account of John Edwards's Pursuit of the Presidency and the Scandal that Brought Him Down. In his interview with Woodruff, Young chronicles his time with Senator Edwards, including his efforts to hide the secret that would eventually shock the American public.

Barbara Walters interviews South Carolina's First Lady Jenny Sanford in conjunction with her memoir, Staying True," which will be published in February. Sanford discusses how she tried to stay true to herself and her family after husband Governor Mark Sanford disappeared and then revealed his extramarital affair with an Argentinean woman, the heartbreak behind the headlines of their marriage breakup, and being a political spouse.

It seemed like a neighborhood right out of the 1950's, where adults kept an eye out for trouble and children walked home from school every day without fear. Until one day last October, when 7-year-old Somer Thompson seemed to vanish into thin air on a crowded sidewalk -- in broad daylight -- less than a mile from her home. Her body was discovered two days later in a landfill in Georgia, and the community was shocked to learn that there were 162 known sex offenders and predators living amongst them within a five mile radius of Somer's elementary school.

On Friday evening, 20/20 co-anchor Elizabeth Vargas will have an intimate and jaw-dropping report on mothers who are struggling to stay alive, battling their alcohol addiction before it's too late. The in-depth hour profiles the stories of four women from across the country who open up with startling honesty about their battle with the bottle.

The only thing possibly worse than losing loved ones in a fire would be if you were falsely accused of setting the blaze. Yet that's what some experts say happens around the country when the wrong fire investigator determines arson based on outdated techniques. Is it what happened to Amanda Kelly? Kelly's world fell apart on a winter's day in 2001 when she was charged with arson, accused of setting a fire that engulfed her Alexandria, Louisiana home, killing her three children. She faced the death penalty.

Becky Babcock: My Mother Was a Killer. Daughter of Diane Downs, given up for adoption, talks about uncovering the secret of her mom's identity.

Is it ever okay to take the law into your own hands? That question has divided a California community since the murder of a respected town businessman last February. Aaron Vargas, a young father about to be married, shot and killed Darrell McNeill - a former neighbor and the father of his childhood best friend - while McNeill's wife watched. But as the story unfolded, everyone in Fort Bragg, CA was stunned to learn of the alleged dark secrets kept for decades between the two men. Vargas told his family and the authorities that McNeill had sexually and psychologically abused him for years. Was killing McNeill revenge? Vigilante justice?

How young is too young... Should parents just say no to kids who want to do something so extreme and dangerous as climbing Mt. Everest, bullfighting or sailing solo around the world? Is a seven-year-old too young to hate? Is a 10-year-old plagued with psychiatric disorders too young to use medical marijuana?

A mystery woman who says she was a first love and longtime confidante of Joran van der Sloot is speaking out for the first time.

It has been a year since Michael Jackson's death and now, only on 20/20, what no one has yet heard, new intimate details from those who stood by his side right to the end.

Was the untimely death of a Baptist preacher's wife really a suicide as the justice of the peace first ruled or was Kari Baker, a perfectly healthy mother of two, murdered by her husband? Kari's family's persistence in keeping the case alive, finding another woman and suspecting foul play, ultimately led to her husband Matt's arrest, and then conviction.

Did an attractive yoga teacher from Maine try to kill her husband by beating him with a baseball bat as he slept, then shoot herself in a staged home invasion? Jim Avila reports on the heinous crime that stunned a small Maine community, and the trial of Linda Dolloff.

Washington Redskins Cheerleader Ambassador Desiree Jennings, 25, had everything going for her until one day her body suddenly stopped working, turning into a twisted, jerky mess. For some inexplicable reason, when she runs, Desiree's body untwists and straightens out, and sometimes she can walk backwards and sideways without trouble. Footage of this unusual phenomenon spread quickly online, making her an internet sensation. Was it caused by a flu shot, as Desiree thought? Her journey for answers to this medical mystery takes her to a controversial osteopath in North Carolina and ultimately leads people to question whether or not her affliction is real.

How can a person living a life many can only dream of suddenly become a cold blooded murderer? Kelley Cannon was an attractive, well-to-do debutante who lived in a grand house with beautiful kids and a loving attorney husband. But after a back injury left her abusing drugs and spending time in rehab, her world started to fall apart. First her husband, James, filed for divorce, than he won temporary custody of their four young children. After James was found dead in a closet, strangled to death by a phone charger cord, all eyes turned to Kelley. Was this once petite woman capable of killing a man -- the man she once loved - with nothing more than a phone cord?

A man who lost 400 pounds and gained a new life, a bald model who wins beauty pageants, a man with an idea that catapulted his financial worth into the stratosphere, a wife who stunned her neighbors -- and her husband -- when she fell in love with another woman.

The question of who murdered a Fayetteville, North Carolina military wife and two of her young daughters in their own home, leaving only one toddler alive, seemed to be answered with the conviction of a soldier who was a husband and a father himself. But years later that verdict was overturned and the original suspect, Tim Hennis, was acquitted. Then, after two decades of freedom, dramatic new evidence points back to Hennis. Elizabeth Vargas reports on a murder mystery that played out over 25 years... and came to a surprise ending in a North Carolina courtroom this past April.

Chris Cuomo's Exclusive Television Interview with Bobbi Ann Finley, Who Allegedly Targeted More than a Dozen Servicemen by Marrying Them and Taking off with Their Money.

In an ABC News investigation, Brian Ross tracks down the American fugitives accused of being part of a scam that has affected thousands of senior citizens. US officials say the swindlers, based offshore, have used new technology and the good name of the Make-a-Wish Foundation to rip off millions of dollars from unsuspecting Americans.

Whom to believe -- mother or son? Just hours after the drowning death of seven-year-old Adrianna Hutto, her six-year-old brother, AJ, had a horrific story to tell police about their mother, Amanda Lewis. He accused his mother of dunking Adrianna, drowning her in their Florida pool. But can AJ be believed, or was he coached into telling the damaging story?

Why did high school outcast Christine Paolilla, who was transformed from an ugly duckling into "Miss Irresistible," turn on the very girls who made her popular? On a hot, quiet July 2003 afternoon, four recent high school graduates, including Paolilla's two best friends and the most popular girls in school, Rachael Koloroutis and Tiffany Rowell, were gunned down at Tiffany's home in a Houston, Texas suburb. Police were baffled by the murders, which were seemingly random. But as police dug deeper in an investigation that dragged on for three years, they discovered that the killer might be closer to home than anyone ever expected. Was Christine Paolilla responsible for murdering Rachael, Tiffany and two others?

In his first interview since the tragic shootings at the Safeway in Tucson, Arizona, Capt. Mark Kelly sits down one-on-one with Diane Sawyer to offer an intimate portrait of a modern American love story, and to talk about a great national tragedy and finding the strength to heal. Their emotional conversation took place one week after the tragic shooting.

Who killed a popular school nurse and beloved mother of five from a picture postcard New England town on Mother's Day, 2009? Newly divorced Stacey Burns was viciously murdered in her bedroom, her body discovered by her two oldest kids. Could ex-husband and the father of her children, Ed Burns, have had a motive after going through a bitter divorce. Did her ex-boyfriend, Jim Vittum, have one after a recent break up? Or did someone else play a role in the murder? A year and a half later, New Hampshire State Police still have many questions left to be answered.

They started out like any kids, full of hope and dreams - but now they're homeless and in terrible danger of slipping between the cracks. These kids are not living under a bridge, but under the radar -- part of a new under-reported type of homelessness -- surfing from couch to couch, from the beds of friends to the beds of strangers. For over a year, Chris Cuomo and his team have chronicled the terrors and triumphs of four such teenagers, all surviving largely on their own.

One Family's Desperate Attempt to Survive Nine Brutal Winter Days Lost In the Oregon Wilderness, with Little Food and Surrounded by Black Bears.

Lisa Nowak has been to outer space, but that's nothing compared to the trip she took from Houston to Orlando. It was a bizarre story that made national headlines: decorated astronaut and national hero Lisa Nowak drove 900 miles through five states to confront her ex's new girlfriend, Air Force Captain Colleen Shipman, in a deserted dark Orlando airport parking lot. Why did Nowak have a knife, bb gun, mallet, pepper spray and diapers with her? What was her plan?

Did Michele MacNeill, a former beauty queen and mother of eight, really die of natural causes after falling unconscious in the bathtub, as her husband, Martin, suspected and police concluded? The medical examiner originally ruled death by natural causes, but is there more to this tragedy than meets the eye? Could Martin, a well-established local doctor, have been responsible, as his daughters Alexis and Rachel allege?

Canning questions Sheen on his controversial remarks and his public feud with the CBS comedy's creator, Chuck Lorre, which resulted in the hit show's suspension, as well as his notorious headline-making actions.

Carmina Salcido was just three when her father, Ramon, a hard working, hard drinking vineyard employee, went on a killing spree, taking the lives of seven people, including her mother, two sisters, grandmother and two young aunts, plus a vineyard supervisor. According to the doctors who saved her life, Carmina's survival was nothing short of a miracle.

Is a television show and its main character giving some viewers the idea to act on dark thoughts? ABC News Correspondent Jay Schadler reports on two murders which may have been inspired by the hit TV crime show "Dexter." Schadler travels to Rising Sun, Indiana to interview Andrew Conley, who was convicted of killing his younger brother, Conner, and to Edmonton, Alberta in Canada, where Mark Twitchell is currently on trial for the murder of John Altinger. Twitchell, a filmmaker who made a short film about a fictional murder in a garage, is alleged to have returned to the garage to commit murder for real. It's alleged that his movie script may have been a template for an actual homicide.

It was a case that stumped police: who beat Inna Budnystka, a young, blond cruise line worker in a Florida hotel, snuck her out of the hotel and left her for dead in a deserted cul-de-sac? Surveillance cameras captured her entering the elevator at the Miami hotel where she'd been staying, but she was never seen leaving again. When she regained consciousness, her statements to police were contradictory and confusing.

Former Chicago Bears star player Shaun Gayle speaks for the first time about the murder of his pregnant girlfriend and unborn child, gunned down at close range in 2007 by a woman who was secretly obsessed with him.

With home videos and rarely seen photographs from their childhoods and interviews with friends and Royal insiders, viewers are sure to learn things they never knew about the couple and their courtship.

Elton John and his partner, David Furnish, will sit down with Barbara Walters for their first major U.S. Television interview since the birth of their son, Zachary, this past Christmas. In the interview, John and Furnish will discuss why they wanted a child, how they kept the baby a huge secret until he was born, and how fatherhood has changed them both. They will also introduce Walters to Zachary, their four-and-a-half-month old son.

How do you survive the emotional and physical scars of an explosive plane crash? Popular mommy-blogger Stephanie Nielson and her husband, Christian, recall in excruciating detail their story, from surviving the actual small Cesna plane crash, engulfed in flames, to their painful and long recovery, to how Stephanie overcame her depression and learned to be a mom again to children who did not recognize her.

The days when the infomercial was a feature of only late-night TV viewing for insomniacs are long gone. Today infomercials are on 24 hours a day, seven days a week, and offer a diversity of products for all tastes. In fact, the explosion and expansion of infomercial products has transcended TV, and these products are now on store shelves nationwide. But how often does "too good to be true" ring true for infomercials? Who is watching - and buying -- the products that are being hawked by everyone from celebrities, fitness fanatics and other high-profile names? What's the next big thing? And what happens when you become an "infomercial addict"?

Private Channing Moss was on patrol in Iraq with members of his platoon from the 10th Mountain Division from Ft. Drum, NY when he was struck by an RPG that lodged in his lower abdomen -- but didn't explode. The soldiers' rulebook dictates, in this rare incident, that the wounded soldier should be moved aside and made as comfortable as possible, but that the lives of others should not be risked to save his life. A series of tough calls - all against the rules - then ensued.

It's decision time for Senator John Edwards - will he enter a plea deal or will he be indicted by the Justice Department for allegedly violating campaign law? We now know the former Presidential hopeful lied about his affair and the child he had with Rielle Hunter, but did he misuse hundreds of thousands of dollars to cover up the affair?

In the cutthroat world of beauty pageants, where competition is fierce and the hint of scandal can cost you your crown, Blair Griffith was hiding something very personal. Last October Blair was crowned Miss Colorado in the Miss USA Pageant - the next shot was at the national title. But before her bags were even packed for the competition, a knock on the door upended her life. Her family, broke, was being evicted.

From being scammed on dating sites to sites dedicated to showcasing the gruesome, 20/20 reports on the growing number of people victimized online and how cyber acts can lead to very real, life altering damage. Cuomo and a team of cyber experts break down how cyber villains operate and how people can avoid falling victim.

For 26 years it was a secret... what happened to the missing baby of infamous murderer Diane Downs, whisked away from the hospital just after birth, never to be heard from again. And with that kind of past, what kind of the future would she have? No one knew what became of this innocent child until now. Rebecca Babcock, born of a killer, talked to 20/20 about being the seed of a monster and how that legacy has shaped her life.

Millions of viewers watched Diane Sawyer's landmark interview with Jaycee Dugard, who was kidnapped at age 11 on her way to school and held captive for the next 18 years, during which time she was repeatedly abused and gave birth to two daughters. Many of those viewers filled the ABC News message boards with remarks about her survival and resilience. Now Chris Cuomo takes a closer look at Dugard's healing process, which includes a special horse therapy that has been an essential part of her treatment.

Superpowers are usually associated with action superheroes like Superman or Batman. And right now, from movies like "Captain America" to weekly fan conventions across the country, superheroes are bigger than ever. ABC invites viewers to meet some real people with superpowers that they've developed by dedicating their lives to the basic human urge to overcome limitations, to soar by unlocking abilities hidden deep within.

What happens to a family when a child's birth becomes a medical mystery? Barbara Walters reports on Kaylee Halko and Lindsay Ratcliffe, two vibrant young girls who suffer from a rapid-aging disease called progeria, a fatal condition that currently affects 80 known children in the world. The disease causes children to age at 10 times the normal rate. It is incredibly rare - occurring in only one of every four to eight million births - and always fatal. On average, children die at the age of 13.

There are an estimated six million hoarders in the United States - and while they suffer tremendously from the effects of this mysterious and devastating mental illness, their families also suffer along with them. In fact children of hoarders often spend a lifetime feeling ashamed, trapped and traumatized by the conditions of their home. In an eye-opening report, 20/20 looks at the children of hoarders, who come clean about the shame, resentment and lifelong secrets of growing up in such conditions.

Was it an accident or a suicide attempt at 80 mph on a highway that shattered one life and killed two other innocent people? Justine Winter was a 16-year-old straight-A student with a bright future. But one night, while breaking up with her boyfriend, she texted him that she wanted to end her life. Just a few minutes later, her car collided with a car carrying Erin Thompson and Erin's 13-year-old son, Caden. Both were killed instantly, yet somehow Justine survived and was charged as an adult with two counts of homicide. But was it? Did she deliberately kill a mother and her son, or did something else happen that night?

It was the "puff" seen around the world: 13 million people watched a YouTube video of two-year-old Aldi, an Indonesian boy, puffing hungrily on cigarette after cigarette with his family looking on. But while many viewed the video with amusement and perhaps some shock, 20/20 traveled to Indonesia to find that Aldi is just the tip of the iceberg, just part of a much larger story.

It was like a modern-day tale of Romeo and Juliet: A 14-year-old girl and 19-year-old boy fell madly in love, despite a parent's objection. But what happened next - a series of events that resulted in the murder of one of their mothers - was far from the ending of the Shakespeare play.

Everyone from stay-at-home moms to entrepreneurs, musicians and comedians are creating a new or second career and earning income by posting videos on YouTube. No longer do you need an agent or manager to launch a singing career or to publish a book. No longer do you need a company behind you to sell your ideas, products or how-to knowledge. Six years ago YouTube.com launched on the web and revolutionized video sharing. What began as a simple idea -- allowing anyone to upload and view videos, for free -- quickly transformed into a platform that connected the world. Now YouTube encompasses everything from how-to videos to entertainment, self expression, business and citizen journalism.

In the final hours before the verdict in the appeal trial of Amanda Knox, the now 24-year-old American convicted in 2009 with two others of murdering her roommate, Elizabeth Vargas reports the very latest bombshells in court from Perugia, Italy. For the past week in an underground medieval courtroom, the closing arguments in Knox's appeal have been unfolding before a jury of two judges, six jurors and a worldwide audience of millions. The proceedings have been intense - the prosecution showing images of the fatal wounds to the victim, Knox's former roommate Meredith Kercher; the defense insisting that the young American is herself a victim of shoddy police work and an overzealous prosecution. As Amanda and her family wait for word that could mean freedom, or a life sentence, Vargas, who has been covering the story from the beginning, reveals never-before-seen letters from Knox to her family, new interviews and access to the investigation, and uncovers details about the prosecutor's questionable past and motives.

In February 2008, 14-year old Brandon McInerney and 15-year old Lawrence King sat a row apart in 8th grade English. Just days before Valentine's Day, Brandon brought a gun to middle school and shot and killed Larry in front of his classmates. The unanswered question remains, why?

For the first time since Bernie Madoff was arrested almost three years ago for orchestrating the biggest ponzi scheme in American history, bilking investors of billions of dollars, a Madoff family member breaks her silence and reveals never-before-heard family secrets. In an exclusive television interview, Stephanie Madoff Mack, widow of Bernie's son, Mark Madoff, who took his own life two years to the day after his father's arrest, speaks candidly and emotionally to ABC News Anchor Chris Cuomo about marrying into one of New York's most powerful families, living through the public humiliation of Bernie Madoff's financial crimes and coping with her husband's suicide. She also reveals for the first time a letter Bernie Madoff sent to her from prison after her husband's suicide.

Michael Jackson's death on June 25, 2009 stunned the world. To many, the fact that his personal physician, cardiologist Conrad Murray, was right by his side - being paid $150,000 a month to watch over a sleep deprived Jackson six nights a week - was also shocking. Now a jury must decide if Murray was negligent, ultimately responsible for Jackson's death.

Most polygamous families don't share their lifestyle with the outside world for fear of prosecution, discrimination and being shunned by their neighbors and the community - that is, until now. For the first time, the entire Darger family of Salt Lake City welcomes 20/20 into their polygamous home, risking prosecution to make their case for the right to freely practice their religion. Joe Darger, 42, has three wives and 24 children - but his family does not fit the stereotype of polygamists who wear 19th-century clothing and cut themselves off from the "evils" of mainstream society. They are attractive, outgoing, educated and have successfully blended into today's society, with their children going to public schools and hanging out with non-polygamous friends and families.

How young is too young to sailor around the world on your own? Should parents just say no to kids who want to do something so dangerous? Is a 7-year-old too young to be taught to hate? Is it ok for10-year-old girls to dress in padded bras and dress sexy?

Just one week after police tracked down country star Mindy McCready, accused of kidnapping her five-year-old son, Zander, the country music star tells her side of the story exclusively to ABC News. On November 29, McCready, who does not have custody of her son, took him and fled to Arkansas during a visit with him. For the first time, McCready will reveal why she felt her son was in danger and the reasons behind the extraordinary lengths she took to keep him in her custody. She will also detail the dramatic moments when she and her son were discovered by police. The troubled star, now pregnant with twins, also explains the cryptic messages she sent early this week hinting that a judge found in her favor at a hearing in Arkansas.

ABC News Continues Its Year-Long Global Health Series by Examining the Most Dangerous Thing a Woman Can Do: Why So Many Women Are Dying During Pregnancy and Childbirth.

Dharun Ravi, convicted of a hate crime, speaks exclusively to Chris Cuomo.

Does winning a lottery jackpot really buy happiness?

Yvonne Stern survived three hits put out by her husband's ex-mistress.

A look at the unbelievable world of modern air travel.

From '50 Shades of Grey' to open marriages, what's going on with sex these days?

Meet the wildly gifted and tragically desperate who come to Sunset Boulevard.

From an ex-HR exec to a porn-star-turned mom, confessions you won't believe.

Who lets children ride bulls, drive monster trucks? Meet some unusual parents.

Meet a teen who hates sound, a woman who eats rocks and more.

They say good fences make good neighbors. But what about video cameras and the internet?

Stories of people who took matters into their own hands to right a wrong.

A champion gymnasts stunning secret, a brides unbelievable deception and more.

Author Rielle Hunter discusses her upcoming memoir and her relationship with former Democratic presidential candidate John Edwards.

What does it take to raise a mega family?

Chimpanzee mauls student in South Africa; Wild animals popping up in human habitats.

Teacher Caught Having Group Sex; Silly and Shocking School Pranks; When Student Discipline Goes Far

Going to Extremes: $65M to Marry My Daughter; Extreme Plastic Surgery.

Meet the teen who took on the popular coach, helping convict him of sexual abuse.

Insider Secrets at Restaurants and with Airplane Food.

A look back at the events of 2012.

Confessions of a Burglar, Pilot, Hairstylist, Doctor and Window Washers

The latest on the Cleveland kidnap victims and the Jodi Arias verdict

ABCNews' Barbara Walters explores the upcoming royal baby.

Personal Assistants, House Managers, Nannies, Butlers

From demon visions to alleged infidelity: Inside an unbelievable murder case.

The last person to see Sheena alive, her fiancé Joe Genoese, speaks with 20/20's David Muir

20/20 secrets and hazards from some very common businesses.

Man Discovers His Entire Life Has Been a Lie; Con Woman Linked to 50-Year-Old Mystery

Sixteen-year-old Skylar Neese disappeared after she snuck out of her West Virginia home in 2012. Investigators later learned that two of her friends had stabbed her to death.

Investigative Genealogist Reconnects Lost Family Members; Why Did Chris McCandless Go 'Into the Wild'?

Melissa Moore, daughter of Keith Jesperson, was a teenager when she found out her father was a serial killer.

Suzy Favor Hamilton's Secret Struggles Despite Success on Track; Olympic Runner Suzy Favor Hamilton Becomes Top Las Vegas Escort; Suzy Favor Hamilton Shocked by Bipolar Disorder Diagnosis.

O.J. Simpson: Inside the Case of the Defense 'Dream Team'; Hear O.J. Simpson Speak For the First Time Under Oath.

‘Shark Tank' Shark Kevin O'Leary Names His Top 5 Sales Techniques; What You Might Not Know About the Business of Mark Kay.

Tennessee Woman Claims She's Victim of Online Threats to Her Life; Young Couple Found Murdered With Baby Alive, Covered in Blood; Woman Denies Wanting Couple Dead Because of Social Media Feud

The so-called "affluenza" case of a Texas teenager who caused a fatal car accident that killed four people and severely wounded another made national headlines in 2013 when 16-year-old Ethan Couch's defense team used an unusual argument during the trial. During Couch's sentencing, a psychologist hired by the defense testified that the teen was a product of "affluenza" -- a term used to describe Couch's irresponsible lifestyle associated with his affluent upbringing -- and that irresponsible parenting had "strongly enabled" the accident, despite the fact that Couch had a blood alcohol level three times the legal limit on the night of the crash.

An Arkansas family re-homes two of its three adopted daughters when the girls' disruptive behavior causes the people to fear for their own safety.

Actress Leah Remini reveals in an exclusive interview with ABC News "20/20" how Tom Cruise was one of the factors that led her to break from the Church of Scientology. "Being critical of Tom Cruise is being critical of Scientology itself… you are evil," Remini told ABC's Dan Harris in a new promotional clip from the interview. Remini, 45, describes how she and her family joined the Church when she was a young girl, built a successful acting career in Hollywood while being a diligent Scientologist, and how she eventually decided to sever ties with the Church.

"As time goes on, you start to lose touch with the real world. The mindset becomes ‘Us against them,'" Remini said. "The decision to leave is you are giving up everything you have ever known and everything you have worked for your whole life." The actress also details her 30-year association with the Church in her new memoir, "Troublemaker: Surviving Hollywood and Scientology." "I feel that people need to understand this has been my whole life," Remini said "I want them to understand how it happens."

Angelika Graswald, accused of killing her fiance during a kayak trip on the Hudson River, discusses the case while behind bars; the 911 call and interrogation video; interviews with two of Graswald's friends; legal roundtable and a kayak expert.

Terrorist attacks on Paris

Barbara Walters interviews candidate for GOP nomination Donald Trump, his wife, Melania, and his children.

Mother and daughter reunion after 50 years, an unbelieveable injustice

Dalia Dippolito, whose conviction for hiring a hitman to kill her husband was overturned, tells her side of the story.

The Searchers: An investigative genealogist helps an army veteran, whose twins disappeared from his life in Korea more than 40 years earlier, find his children.

Former CIA agent Michele Assad and her husband, Joe, plan the evacuation of 560 Iraqi Christian refugees who have been displaced by ISIS.

A privileged teenager named Ethan Couch, who plead guilty to four counts of intoxication manslaughter, avoids jail time after psychologist Dick Miller claimed the young man's upbringing caused him to have "affluenza".

Convicted of murder despite the lack of a body, weapon or DNA evidence, Mario Casciaro speaks out about the crime he says he did not commit.

When a wealthy doctor is found murdered in his Texas home, a tip leads investigators to the victim's girlfriend's ex-boyfriend.

Criminal charges filed against comic Bill Cosby; Cosby's defamation counterclaim against some of his accusers.

The good and bad ways in which the lives of lottery winners changed; lottery winners discuss their paths to instant wealth.

Michigan state Rep. Todd Courser is caught on tape scheming to spread rumors he was involved in casual gay sex to help cover an extramarital affair between him and a colleague, Rep. Cindy Gamrat.

Investigative genealogist Pamela Slaton helps a man who was abandoned as a baby, a woman with a half-brother she has never met and a woman seeking her biological father search for their families.

An encounter in traffic during a driving lesson leads to a shootout and the death of Tammy Meyers.

After nearly 17 years, Sue Klebold, the mother of Columbine shooter Dylan Klebold, speaks on television for the first time ever about the tragedy, the victims, the relationship with her son and what it was like inside their home.

People try to free their children from a polygamist sect; a mother is confronted by the sect's parishioners; how federal investigations, lawsuits and apostates of the church are fracturing the polygamous community.

A jury decides the fate of Matt Leili four years after he was charged with the murder of his wife, Nique, who went missing from their home a week before being found dead.

Looking at defining moments in the careers of some of the most notable 2016 nominees, including Sylvester Stallone, Brie Larson, Bryan Cranston, Ridley Scott and Matt Damon.

A community theater actor tries to frame a veteran of the war in Afghanistan for the murder of a 23-year-old college student.

David Muir reports on the deadly heroin epidemic that crosses all boundaries and has few treatment options.

ABC News' anchor Diane Sawyer has the first sit down television interview with actress Kate del Castillo. Del Castillo, the woman who was at the center of the controversy with Joaquin "El Chapo" Guzman, discusses what happened and the danger surrounding the takedown of one of the most wanted men in the world.

Tucked away in Manhattan's Lower East Side, a family with seven children lived together in a small apartment for more than a decade, but almost no one knew they existed. The children - one daughter and six sons - were raised in four small rooms, homeschooled by their mother and trapped by their father, who allowed them to leave the apartment they shared only for rare, closely supervised outings. Until one day in January 2010, when one son, Mukunda, a middle child who was 15 at the time, found the courage to break free. The story of the Angulo family was revealed through the award-winning documentary "The Wolfpack," focusing on the six brothers - Bhagavan, Govinda, Narayana, Mukunda, Krisna (now Glenn) and Jagadesh (now Eddie) - then ages 11 to 18, and their unusual upbringing, along with their passion for movies, so intense that they copied down entire scripts, constructed costumes and props, memorized lines and acted out entire scenes.

The 2012 shooting death of Ashley Fallis in her Colorado home is investigated to determine whether she was murdered or committed suicide.

It was a bitter cold evening in April 2013 when sisters Samantha and Gianna Rucki ran away from their Lakeville, Minnesota, home. They left without their shoes or coats and disappeared into the night. But oddly, there was no manhunt to find them, no Amber Alert was issued and there were no police press conferences to provide updates after they went missing. The girls were found almost three years later, alive, healthy and living at a therapeutic horse farm less than three hours away from their family home. Now their mother, who denies having any involvement in their disappearance, is facing felony charges, and the circumstances of how and why these two teen girls vanished is a mystery beginning to unfold.

What would drive a church-going Springfield, Missouri, woman and her daughter to fatally poison two family members with anti-freeze, and attempt to kill a third over a 14-month period? Diane Staudte and daughter Rachel both confessed to the murders of Diane's husband, Mark, and her son, Shaun, and attempting to kill her daughter Sarah, and are both serving life terms in prison. "20/20" takes viewers inside the case, revealing new details of the heinous murder plot. ABC News correspondent Deborah Roberts sits down with Sarah Staudte, the surviving victim, who describes how she discovered that her mother wanted her dead. The hour also features interrogation tapes of Diane and Rachel Staudte describing, in their own words, how and why they did it, as well as interviews with detectives, prosecutors, and friends and family members of the victims.

Mary Kay Letourneau Fualaau was forced to go public in 1997 with an affair she was having with her former sixth grade student, Vili Fualaau, after she became pregnant with his child, it was the teacher-student sex scandal heard around the world. Today, Mary is 53 and Vili is 31. The couple is still together and are about to celebrate their 10th wedding anniversary.

"20/20" will report on the incredible life and untimely death of music legend Prince. The hour will be anchored by Elizabeth Vargas and will feature reporting from Vargas, Dan Harris from Prince's home in Minneapolis, Chris Connelly in Los Angeles, and Deborah Roberts in New York.

Ron Miscavige, father of the Church of Scientology leader David Miscavige, speaks exclusively to ABC News Anchor Dan Harris about his son's journey within Scientology starting when the family joined in 1970, and then his ultimate rise to current leader of the Church. It is a rare look inside Scientology told by someone who lived it for more than 40 years, 27 of them working for the Church's Sea Organization. Ron Miscavige's experience with and ultimate break from Scientology in 2012 is recounted in his new revealing memoir, "RUTHLESS: Scientology, My Son David Miscavige, and Me."

Amanda Berry and Gina DeJesus on their abduction by Ariel Castro and their plans for the future.

Could someone ever forgive a mom who would abandon not one but three newborn babies within blocks of each other over a five-year period? It is an incredible mystery that is solved right before viewers' eyes, as "20/20" teams up with renowned DNA detective and genetic genealogist CeCe Moore. Janet Barnicoat, one of those three baby foundlings, started her search as many do, with a Facebook post begging for clues about her biological family. The post went viral. After hearing about her story, Moore volunteered to help her on her search. What followed is a bewildering and shocking story, as Barnicot discovers she is one of three siblings abandoned by the same mother. But once the three are reunited, they go on a quest to find that mystery mom responsible for the unthinkable. It all culminates in a dramatic family confrontation and a series of startling confessions. Even Moore, with her 16 years of experience, had never seen a story like this one – telling Elizabeth Vargas, "It just blew my mind."

What happened to Kelsie Schelling? Twenty-one year old Kelsie mysteriously vanished into thin air in Pueblo, Colorado, over three years ago. The family says surveillance video, text messages and other evidence point to her boyfriend's involvement, yet, to their outrage, police have not yet classified the case as a homicide and have not charged him with a crime. But then a series of Facebook messages to Kelsie's mother raise new theories – is the missing girl's disappearance prompting someone to attempt extortion? "20/20" investigates and confronts those behind the mysterious plot and uncovers developments about what really happened to Kelsie.

Jannie Ligons, a director of a daycare center in Oklahoma City, will never forget the night in 2014 when then-Oklahoma City Police Officer Daniel Holtzclaw pulled her over. Ligons' story of what happened during the traffic stop is exactly the same as the way Holtzclaw tells it, that is until, she says, Holtzclaw forced her to expose herself under the guise of searching Ligons, a 58-year-old mother of four and grandmother of 12, for a concealed weapon. Ligons is African-American, and Holtzclaw is half-white, half-Japanese.

With allegations of sexual misconduct spanning five decades from more than 50 women, it was only this past week that a Pennsylvania judge ruled that there is enough evidence to try Bill Cosby on criminal charges. Elizabeth Vargas brings the latest news in "Cosby on Trial" - a legal battleground that now includes both civil and criminal actions across several jurisdictions - including Cosby's new defamation counterclaims against some of his accusers.

Fourteen-and-a-half years ago Michele Harris, a mother of four young children, disappeared without a trace from her luxurious home in upstate New York. Her abandoned minivan found at the bottom of her driveway on the family's expansive estate led many to believe.

Bobby Brown on Forming New Edition, Then Solo Career; What Led to Bobby Brown, Whitney Houston's Divorce; Bobby Brown on Passion for Cooking, His Kids

Orlando Nightclub Massacre: A Timeline of What Happened; Orlando Nightclub Massacre: A Violent Attack on Prideful Community; Orlando Massacre Suspect's Father: 'I'm Really Saddened and I'm Really Surprised'.

Community Recovery czar Christopher Bathum is accused of sexual battery by former clients.

New hope leads to further investigation into a cold case: the disappearance of Indiana college student Lauren Spierer.

Dallas Ambush Shooting: From Peaceful Protest to Chaos; Dallas Shooting Suspect Wanted to Kill White Cops, Police Say; Black Parents on Talking to Their Kids About the Police.

Jaycee Dugard Recalls the Day She Was Kidnapped; Jaycee Dugard's Mother Terry Probyn on Moving Forward; Jaycee Dugard Checks Off Items on Her 'Dream' List.

A family struggles to have their daughters apparent suicide reinvestigated as a murder

The FBI trails a family of dysfunctional bank robbers.

A suspect, Felix Vail, is investigated and tried for a 50 year old murder of his wife and the disappearance of two other women.

When a wealthy doctor is found murdered in his Texas home, a tip leads investigators to the victim's girlfriend's ex-boyfriend.

Failed efforts to free American humanitarian aid worker Kayla Mueller from ISIS captivity following her 2013 kidnapping.

The investigation into the 2007 disappearance of a soccer mom reveals she had been running an escort business and one of her clients may be to blame.

Diane Sawyer sits down with Elizabeth Vargas to discuss Vargas's secret struggle with alcohol and anxiety as revealed in her book "Between Breaths: A Memoir of Panic and Addiction''; anxiety and alcohol abuse among Americans is examined.

The investigation into the killing of a criminal law professor leads detectives to suspect the murder is the result of a family feud.

Friends, Family Stunned to Learn UNC Student Is Dead; FBI Develops Profile of Murdered UNC Student's Killer; Police Remain Confident They Will Find Faith Hedgepeth's Killer.

After being indicted for second degree murder by a grand jury, Nick Hillary, a black man accused of killing 12-year-old Garrett Phillips, faces trial in an all white town. Garret's mother, Tandy Cyrus, reflects on the emotional aftermath of losing her son.

After two trials, Kimberly Long was convicted of brutally murdering her boyfriend, Ozzy Conde, has spent seven years in prison, and, with the help of The California Innocence Project, she now has a new shot at justice. With her conviction overturned and the possibility of a third trial, 20/20 investigates whether she really committed this violent crime as the prosecution alleges. ABC News Correspondent Matt Gutman sat down with Kimberly as she tells her side of the story.

University of Virginia's former Associate Dean of Students Nicole Eramo talks about the Rolling Stone article detailing the alleged gang rape of one of the school's students at a frat party.

Christopher Waide is convicted of the 2014 murder of 19-year-old Lea Porter and is sentenced to 48 years in prison; the report includes never-before-seen police interrogation videos, surveillance videos and crime scene photos.

U.S. authorities scrutinize a supposed miracle cure for autism that a fringe church is promoting; employees faking injuries to receive disability; an American woman convinces people she is a descendent of French nobility.

Babs Proller told ABC News' "20/20" that she hid a tape recorder during her conversations with federal prosecutors' star witness, Armando Morales.

A look at the life of Donald Trump and how he captured the presidency, featuring interviews with his family, longtime friends and campaign manager Kellyanne Conway.

Journalist Gretchen Carlson speaks out about the sexual harassment she's experienced throughout her life; a former Wall Street trader talks about the sexist atmosphere he observed at work; lengths people will go to to prove harassment claims.

Kiefer Sutherland on Starring in ABC's Hit Show "Designated Survivor"; The Top Secret Bunkers the Government Doesn't Want You to Know About; How Poland Coped When Most of Government Was Killed in Plane Crash

The incredible story of Owen Suskind, a young man with autism featured in the recent documentary "Life, Animated." In 1994, when Owen was almost three years old he started to withdraw and eventually stopped speaking. At the time, not much was commonly known about autism, and Owen's parents, Ron and Cornelia, took him to a specialist who diagnosed him.

A conversation with Keith Papini, husband of the California mom who disappeared on Nov. 2, 2016, and was later found bound and injured 150 miles from her home.

Mark Carver, serving a life sentence for the 2008 murder of University of North Carolina student Ira Yarmolenko, speaks out.

He believes there was enough evidence to indict the Ramseys of a crime.

Investigative genealogist Pamela Slaton helps three people search for their biological families; A woman who was abandoned as a baby discovers she was one of three infants left by the same mother.

Entertainers and legends who passed away in 2016 are profiled, including Prince, Muhammad Ali, Florence Henderson, Fidel Castro, David Bowie, Glenn Frey, Merle Haggard, Pat Summitt, Arnold Palmer, Craig Sager, Gene Wilder, Doris Roberts and others.

Stories from the lives of George Michael and Carrie Fisher.

A look back at the lives and careers of actresses -- and mother and daughter -- Debbie Reynolds and Carrie Fisher.

Ex-members of the Church of Scientology who crusade against it; actress Leah Remini discusses her fight against the Church of Scientology and her goal of making it lose its tax exempt status.

Profiles of working individuals and families across America who are struggling to stay in the middle class; issues of dwindling job opportunities, income inequality and community solutions are explored.

20/20 Anchored by Elizabeth Vargas and David Muir Airs Two Special Hours Thursday and Friday, Featuring a Preview of the Inauguration, Exclusive Interviews With Ivanka Trump, Donald Trump Jr. and Eric and Lara Trump, and Live Coverage From Inaugural Balls.

A celebration of the life and legacy of legendary actress Mary Tyler Moore, from her childhood to her groundbreaking career.

A man claims his mother disappeared during an ill-fated fishing trip the two had embarked on.

Playboy model and reality TV star Anna Nicole Smith is remembered ten years after her sudden death.

The ex-wife of Justin Ross Harris talks about the death of their son and the ensuing court case.

"20/20" takes a look back at the Emmy Award-winning series "Shark Tank" and the incredible American entrepreneurs behind $100 million in deals made over the past eight seasons.

A 16-year-old gay teen whose mother sent him to a series of Christian-run youth camps that practice so-called "gay conversion therapy'' talks about his experience.

Charles Manson's tumultuous childhood and time in prison; What happened the night Sharon Tate was murdered by Charles Manson's followers; Where Charles Manson and his followers are today.

After spending 11 years in prison for allegedly murdering her mother, Noura Jackson is released and a new trial is ordered.

What happened before woman was stranded in desert near Grand Canyon; Stranded student near Grand Canyon builds fire, sign to signal for help; Student stranded near Grand Canyon reunites with her rescuers

Two mothers hire a private investigator Sheila Wysocki to search for answers concerning the mysterious deaths of their children, Lauren Agee and Jonathan Crews.

A Canadian woman who served time for catfishing professional basketball player Chris Andersen and a 17-year-old girl who had a social media presence discusses the reasons behind her scheme.

Two years after the interview during which she announced she was transitioning to female, Caitlyn Jenner reconvenes with Diane Sawyer to talk about the realities of her life.

A Tennessee high school teacher accused of kidnapping his 15-year-old student causes a 38-day manhunt that ends with the two being found in northern California; interviews with people close to the case.

Computer programmer and businessman John McAfee discusses being named a person of interest in the murder of his neighbor and the resulting tumult. He also discusses what his life is like today.

Tracking families that have been affected by severe attachment to digital devices, from the height of unmanageability to the journey toward recovery.

When a 16-year-old girl accuses a classmate of raping her at a party, the investigation divides the small Alabama town.

Exclusive interviews, photos and footage related to the Nixon Watergate scandal.

An international investigation into Otto Warmbier's 17-month imprisonment in North Korea, and his death, which occurred less than a week after he was brought back to the United States in a state of unresponsive wakefulness.

An exploration of the nationwide crisis of road rage and how incidents can quickly become dangerous; traveling across the country with the Colorado State Patrol.

Investigation into the questions that still remain surrounding the 1997 murder of designer Gianni Versace.

Friends of O.J. Simpson discuss the former professional football player and the armed robbery of memorabilia dealers that landed him in prison.

Footage of U.S. border officers accused of encouraging a 16-year-old to drink a dangerous liquid to prove he's not a smuggler; cases of border agents and officers being accused of abusing those crossing the border.

A jury finds a young woman whose boyfriend committed suicide with her encouragement guilty of involuntary manslaughter.

Molly Martens Corbett says husband was controlling, possessive; Former FBI agent, daughter charged with the murder of her husband; Molly Martens Corbett, her father head to prison for murder.

Who are the white nationalists and Antifa; White nationalists, counterprotesters face off in Pikeville, Kentucky; Violence erupts between white nationalists, counterprotestors in Charlottesville.

A reality-TV executive receives a rare hand transplant after losing limbs due to a rare disease.

A freshman at Northern Arizona University who shot four fraternity brothers outside of a party -- killing one -- claims self-defense, leaving the local community divided; interviews with the survivors and the parents of the young man who died.

Doctors with disabilities and others share stories of resilience and survival in spite of tragedy.

Archival footage and new interviews provide a look at the arrest and conviction of Scott Peterson in the murders of his wife, Laci, and their unborn son, even as Peterson awaits answers to an appeal and a legal petition from death row.

Authorities set up an elaborate sting operation to catch a Houston couple who were allegedly attempting to hire a hit man to kill their exes.

Brother recalls the last day he saw his sister Holly Bobo alive; Missing nursing student Holly Bobo's remains are found by ginseng hunters; Jury returns with verdict in man's trial for Holly Bobo's murder.

Las Vegas country music festival underway, as shooter prepares in hotel; Woman describes moment when husband was shot while holding her; Remembering the Las Vegas shooting victims.

Multiple women describe alleged encounters with Harvey Weinstein; Angelina Jolie, Gwyneth Paltrow claim Weinstein harassed them; What could happen next for Harvey Weinstein, his accusers.

Twenty-seven years after a Florida woman was fatally shot on the doorstep of her home by an assailant in a clown costume, police arrest her husband's new wife.

An investigation into the unanswered questions still remaining about the Las Vegas mass shooting; interviews with friends, neighbors, and a girlfriend of Paddock's; survivors and those coping with their new lives.

When former Marine discovered teen son talking to ISIS recruiters; How ISIS uses the internet to target young Americans for recruitment; The fight against ISIS's reach on America's youth.

Civil suits allege sexual assault and defamation regarding a college coach and an athlete.

Following the life of Nathaniel Newman -- who was born with a condition known as Treacher Collins.

The special will include insider details on classic holiday films including a casting decision, Jim Carrey's torture-surviving technique training during "How the Grinch Stole Christmas"; and a visit to a Vancouver psychiatric hospital, the stand-in for Gimbal's toy department in "Elf." The hour will consider the question of whether favorites such as "Trading Places" and "Die Hard" qualify as Christmas movies; and talk to a spokesperson from Rotten Tomatoes to discuss what it takes to qualify as a Christmas classic. The history of small-screen favorites such as "A Charlie Brown Christmas" and "Rudolph the Red-Nosed Reindeer" will be featured, as well as interviews with the voice-over artists behind these favorite animated characters, and the owner of the fully restored Santa and Rudolph puppets.

Investigation into the 2002 murder of Christa Worthington and whether the man convicted actually committed the crime; a 2-hour special.

Meghan Markle's engagement to Prine Harry; interviews with those who know Meghan; an in-depth look at Meghan's life, family, humanitarian work, and career.

Former members of NXIVM, a professional coaching company, speak out about their experiences in the alleged secret society; NXIVM's litigation tactics against former members and critics.

The only thing more amazing than the lives they save are their own life stories. "20/20" Anchor Elizabeth Vargas sits down with doctors who have disabilities, are inspired by tragedy and practice improvised medicine, as they share their inspiring stories of resilience and survival. The special also goes behind-the-scenes on the set of "The Good Doctor" and interviews actor Freddie Highmore who stars in the show as Dr. Shaun Murphy, a surgical resident with autism and savant syndrome. Highmore discusses how he prepared for playing the role of a doctor with autism and how the public has responded to his role.