Season 1
Episode: 1x01 | Airdate: Feb 23, 2020
In 2009, police officers and firefighters in Stow, Ohio report to the scene of a suspicious house fire. All of the home's occupants escaped without harm, but resident Scott Purk alerted police suspicion by bringing up the death of his first wife Margaret, who supposedly committed suicide in 1985. After exhuming Margaret's body, the examination showed that she did not hang herself, but that she was strangled, leaving Scott Purk accused of arson, insurance fraud, and murder.
Episode: 1x02 | Airdate: Feb 23, 2020
In December 1995, 17 year-old Krystal Beslanowitch leaves her motel room for a convenience store and doesn't return. That same day, her naked and bloody body is discovered near the Provo River with her head bashed in with nearby rocks. Blood evidence from the rocks would ultimately lead investigators to Krystal's killer, although it would take nearly 20 years and advances in DNA technologies to identify the murderer.
Episode: 1x03 | Airdate: Mar 1, 2020
Just five days before a Yale University doctoral researcher was supposed to get married, she suddenly vanished. Video surveillance cameras show Annie Le entering her workplace on the day of her disappearance, but she never left. After her body is discovered in the laboratory basement, investigators find evidence above a ceiling tile, including the perpetrator's bloody clothes. Once suspects are ruled down, DNA evidence points to lab technician Raymond Clark as her killer.
Episode: 1x04 | Airdate: Mar 1, 2020
In 2005, suitcases containing human remains wash ashore near the Chesapeake Bay Bridge Tunnel in Virginia. Police release a composite sketch of the victim, who is later identified as Bill McGuire. Physical evidence from plastic garbage bags, couch fibers, and medical grade towels help to bring the victim's killer - his widow, Melanie McGuire - to justice.
Episode: 1x05 | Airdate: Mar 8, 2020
In 2009, young mother Heather Strube is brazenly gunned down in a Target parking lot in Snellville, Georgia. The killer was wearing an obvious disguise, though it succeeded in hiding the killer's true identity. Witnesses say that the victim was confronted by a man before she was killed, but the discovery of forensic evidence and a powerful motive lead investigators to believe that Heather's killer was actually a woman - her ex-mother-in-law, Joanna Hayes.
Episode: 1x06 | Airdate: Mar 8, 2020
In 2005, a popular handyman in Derry, New Hampshire is savagely beaten to death in a barn. Initially, authorities had no clue who could have wanted the victim dead, but several forensic clues found at the crime scene lead investigators to discover a complicated conspiracy with an unlikely mastermind and a motive almost too bizarre and too unbelievable to comprehend.
Episode: 1x07 | Airdate: Mar 15, 2020
Daniel Lee Corwin, a Texas serial killer, was responsible for the kidnappings, rapes, and murders of several women in 1987. After abducting Wendy Gant, he stabs her several times and slits her throat, but inadvertently leaves her alive. After communicating in writing to a forensic artist, a composite sketch was developed and identified as Corwin. A fingerprint found in Gant's car helps send Corwin to death row, where he is executed in 1998.
Episode: 1x08 | Airdate: Mar 15, 2020
Daniel Lee Corwin, a Texas serial killer, was responsible for the kidnappings, rapes, and murders of several women in 1987. After abducting Wendy Gant, he stabs her several times and slits her throat, but inadvertently leaves her alive. After communicating in writing to a forensic artist, a composite sketch was developed and identified as Corwin. A fingerprint found in Gant's car helps send Corwin to death row, where he is executed in 1998.
Episode: 1x09 | Airdate: Mar 22, 2020
In 1987, a young Canadian couple is brutally slain while on a road trip from British Columbia to Seattle, Washington. After their bodies are found, the victims' families begin receiving disturbing letters. The case goes unsolved for more than 30 years, until forensic investigators use personal genomics to help solve the case, ultimately making forensic history.
Episode: 1x10 | Airdate: Mar 22, 2020
In 2015, a health-conscious chiropractor from Whitesboro, New York mysteriously dies. After Mary Yoder's autopsy shows the cause of death as colchicine poisoning, the investigation into her suspicious death becomes a homicide case. Digital forensics are used to tie Internet searches and an anonymous type-written letter to an unlikely suspect - her office administrator who was her son's ex-girlfriend.
Episode: 1x11 | Airdate: Mar 29, 2020
In December 2011, mother of five Chanin Starbuck is brutally murdered in her Deer Park, Washington home, and her body is found in a sexually suggestive position. Investigators believe Chanin's killer was someone she knew, and during their investigation, they find startling clues on her cell phone that help point to the murderer's identity.
Episode: 1x12 | Airdate: Mar 29, 2020
In November 2009, a young woman's body is found in Moss Bluff, Louisiana. Tattoos on the victim help to identify her as 19 year-old Sierra Bouzigard, and while the crime initially appears to be sexually motivated, no DNA is recovered from Sierra's rape kit. However, DNA under Sierra's fingernails matches DNA evidence found on a candy wrapper near the scene. After several years with no answers, Blake Russell is identified as a suspect using new DNA technology.
Episode: 1x13 | Airdate: Apr 5, 2020
In January 2008, 42-year-old Rhonda Smith was shot as she did temporary work in the office of the Trinity Evangelical Lutheran Church in Springfield Township, Pennsylvania. Another congregant of the church quickly becomes a suspect due to her bizarre behavior. The discovery of a .38 caliber revolver on the shore of nearby Lake Nockamixon helps to link Rhonda's killer to the gruesome crime.
Episode: 1x14 | Airdate: Apr 5, 2020
In June 2007, insurance agent Bob Eidman is shot execution-style in his St. Charles County, Missouri office. Despite the murder occurring in broad daylight, the killer escaped unseen, leaving no fingerprints behind. Years after the murder, touch DNA evidence found in the victim's back pocket is eventually able to lead investigators to a surprising suspect - one of Bill's insurance clients.
Episode: 1x15 | Airdate: Apr 12, 2020
In March 2005, Rosemarie Essa was driving to a local movie theater when she collapsed behind the wheel of her car, bumped into another vehicle, and died. Suspicious investigators discover that her death was not what it appeared, and that she was actually the victim of cyanide poisoning, and the case leads to an international manhunt when a prime suspect flees to Lebanon.
Episode: 1x16 | Airdate: Apr 12, 2020
In July 2000, the decomposing body of 22 year-old Misty Morse is found in the Indian River Lagoon. Her ex-boyfriend Brent Huck becomes an initial suspect, but there is little evidence at the scene. However, there are dog hairs found on duct tape on Misty's body, and testing mitochondrial DNA from Brent Huck's dogs' hairs helps to identify him as Misty's murderer.
Season 2
Episode: 2x01 | Airdate: Jul 11, 2021
The mysterious murder of young teacher's aide leaves a hole in the heart of her small community in Agawam, Massachusetts. As the rumor-mill about suspects churned, the actual perp slipped further away. But generations of investigators and a scientific breakthrough leads to a shocking end to a tragic case.
Episode: 2x02 | Airdate: Jul 11, 2021
51-year-old father, and teacher, Bill Sparkman is found hanging naked from a tree with the letters "FED" scrawled on his chest. With barely any evidence to work with, investigators turn to these letters for answers… which leads to a surprising conclusion that no one saw coming.
Episode: 2x03 | Airdate: Jul 18, 2021
A single mom looking for love vanishes without a trace. Foul play is tragically confirmed when a large pickup truck toolbox opens to her body stuffed inside. Homicide detectives investigate men she matched on dating sites, another man she met at work, and finally, a lover with a secret and violent past. Can forensic evidence connect the dots and lead to justice under the law?
Episode: 2x04 | Airdate: Jul 18, 2021
A 20-year-old woman sets out on her bike and never returns. Her body found just a few miles from her house in Snohomish County, Washington, with a gunshot wound to the head. Who would do such a thing? Years go by without any hard evidence or leads, until a new generation of investigators and modern technology breaks the case and finally puts a face to the killer.
Episode: 2x05 | Airdate: Jul 25, 2021
In 1982, 37-year-old, Navy lieutenant Lee Hartley is murdered while deployed out to sea. Cause of death? Arsenic poisoning. Investigators discover lee had more than his fair share of enemies aboard the ship. But it takes years before investigators discover what really happened to Lee and who, ultimately, was behind this brutal murder.
Episode: 2x06 | Airdate: Jul 25, 2021
A building manager finds the violated and lifeless body of a young woman in the bathtub of her first apartment. When questioned, an ex-con living downstairs lies to police. But the lies alone do not prove murder and the case goes cold. Then a new forensic tool examines the old evidence. Will science point to a hidden suspect and crack the case?
Episode: 2x07 | Airdate: Aug 1, 2021
A murder victim's final moments are caught on tape. The crime scene looks like a clear robbery-murder. Text evidence at first points to a jilted lover, but will his alibi check out? Now police identify a second suspect with a possible motive of deadly revenge. Forensic technology and DNA evidence combine in an attempt to make the case.
Episode: 2x08 | Airdate: Aug 1, 2021
A mortally wounded woman crawls to call 911. Her husband who wants a divorce she will not give him, gets a hard look from police. But he says he has an airtight alibi for the exact time of the murder. The intricate forensic science of ballistics is brought to bear to and draws s a direct connection to an unexpected conclusion.
Episode: 2x09 | Airdate: Aug 8, 2021
A deeply religious librarian, wife and mother named Gail Fulton is shot execution style in the quiet suburbs of Michigan. Surveillance video reveals it was trio of killers that took her down. Is there more to Fulton's background? Eventually, detectives get a break: a handwritten note. But will it provide enough clues to catch the mastermind behind this horrific killing?
Episode: 2x10 | Airdate: Aug 8, 2021
In 1990, three sex workers are brutally murdered and left along the banks of the Spokane river. A serial killer was on the loose—and detectives had few clues. Animal hairs, fibers and a fingerprint were found, but for years the perp was never identified. More than 20 years later there's a break in the case- and an arrest is finally made, but no one could have ever imagined who was behind this sinister crime.
Episode: 2x11 | Airdate: Aug 15, 2021
An early morning house fire kills the only doctor in the small town of Iaeger, West Virginia. Who -or what – could have led to this? An arson investigation quickly leads to the arrest of Jason lively, the son of the doctor's long-time nurse. But when Jason's alleged accomplice walks free, the prosecutor is worried this might have been a miscarriage of justice.
Episode: 2x12 | Airdate: Aug 15, 2021
When a house fire kills the only doctor in a small town, an arson investigation leads to the son of the doctor's nurse; when his alleged accomplice walks free, the prosecutor worries this might have been a miscarriage of justice.
Episode: 2x13 | Airdate: Aug 22, 2021
A young woman is found murdered on the side of a rural driveway; the victim had been out with friends; the investigation would remain unsolved; until three decades later, when forensics from an unrelated crime helps break the case.
Episode: 2x14 | Airdate: Aug 22, 2021
A hearing impaired 77-year-old on a road trip is shot to death because the man cannot hear his assailant's demands; random murders are among the hardest crimes to solve, but investigators are determined to bring this case to justice.
Season 3
Episode: 3x01 | Airdate: Feb 27, 2022
A massive explosion claims the life of a California farmhand, and authorities think it's an accidental death, but analysis of debris shows it's a bomb; investigators have few suspects until they hear ominous rumours about a jealous rage.
Episode: 3x02 | Airdate: Feb 27, 2022
When a beautiful college student is stabbed to death in her Knoxville apartment, suspicion immediately falls on her roommate; a bloody shoe print left by the killer exposes a murderer with no history of violence and no reason to kill.
Episode: 3x03 | Airdate: Mar 6, 2022
A quiet and peaceful county in Texas is suddenly riddled with murders of the members of law enforcement; Several suspects come to light as investigators race against time to apprehend the culprits.
Episode: 3x04 | Airdate: Mar 6, 2022
A woman and her two young children are horrifically murdered in their Illinois home; On the crime scene, investigators discover disturbing threats, spray-painted on the walls, indicating an unexpected killer.
Episode: 3x05 | Airdate: Mar 13, 2022
A teenage couple from Texas are brutally assaulted on Valentine's Day. After the boy escapes but the girl is found dead, the case goes cold for nearly five decades before a new forensic test brings to light a family man with a sinister secret.
Episode: 3x06 | Airdate: Mar 13, 2022
Three workers are found shot dead at a construction site in Indiana. Detectives discover that during the murders, one of the killers stepped on dog feces, so finding the shoes means they'll find the killer.
Episode: 3x07 | Airdate: Mar 20, 2022
A Texas man promises to live a changed life after his release from prison, but soon gets embroiled in a murder case, despite claiming innocence. Back in prison, he takes the help of forensic science to prove his story.
Episode: 3x08 | Airdate: Mar 20, 2022
A successful businesswoman from California falls sick frequently but her doctors are unable to determine a plausible explanation. After her death, they uncover an important person in her life has hidden a secret about their past.
Episode: 3x09 | Airdate: Jul 31, 2022
The body of a 24-year-old criminology student is found wrapped in a blanket alongside a desolate road in Brooklyn, New York. Police discover that the bouncer at a bar is her killer.
Episode: 3x10 | Airdate: Jul 31, 2022
When a 79-year-old woman is found shot to death in her home, investigators initially suspect her husband or a violent neighbour; shell casings recovered at the scene and a high-tech database reveal an unlikely killer.
Episode: 3x11 | Airdate: Aug 7, 2022
A young single mother is abducted from a gas station and later found stabbed to death near an oil field; detectives use shoe and tire impressions to weed out numerous suspects and find the killer.
Episode: 3x12 | Airdate: Aug 7, 2022
When a 23-year-old Marine dies in his bedroom, doctors initially believe a heart attack is to blame, but when arsenic is found in his organs, his wife is charged with murder. A sharp attorney and toxicological testing uncover the truth.
Episode: 3x13 | Airdate: Aug 14, 2022
When an 18-year-old girl is abducted while talking on a pay phone, forensic evidence found on her clothing points police in the direction of a suspect who shockingly confesses that he didn't act alone.
Episode: 3x14 | Airdate: Aug 14, 2022
In the story of a Los Angeles kidnapping, ransom and murder ring, retired scientists use sonar equipment to locate victims at the bottom of a reservoir.
Episode: 3x15 | Airdate: Aug 21, 2022
Patients at the VA Hospital in Clarksburg, West Virginia, keep dying after experiencing shockingly low blood sugar levels; an investigation into their deaths reveals an overnight nurse was injecting patients with lethal doses of insulin.
Episode: 3x16 | Airdate: Aug 21, 2022
A 70-year-old retired veteran is found dead on his boat after a bad sea storm. Detectives discover he was killed during an attempted robbery after winning $400 in keno.
Season 4
Episode: 4x01 | Airdate: Jul 9, 2023
When a true crime hobbyist connects a Utah Jane Doe to an Ohio missing persons case, detectives are hard-pressed to solve the decades-old murder.
Episode: 4x02 | Airdate: Jul 9, 2023
An upscale apparel store in Bethesda, Md., is the site of a gruesome scene when an employee is killed and her co-worker is battered and tied up, but surveillance video and blood evidence shed further light on the crime.
Episode: 4x03 | Airdate: Jul 16, 2023
Eight days after she had disappeared on her way to a family ski trip, an 18-year-old young woman's partially nude body is found floating in a river in Wyoming, Years later, DNA technology uncovers dark secrets that led to her demise.
Episode: 4x04 | Airdate: Jul 16, 2023
Victim: Raveesh Kumra Perp: DeAngelo Austin, Javier Garcia, Marcellous Drummer, Katrina Fritz California police are baffled when an innocent man's DNA is found at the scene of a deadly home invasion. Authorities team with the man's defence attorney.
Episode: 4x05 | Airdate: Jul 23, 2023
A young Colorado mother suddenly vanishes on Thanksgiving Day. When police trace her cell phone, it leads them to a surprising character with an even more surprising story.
Episode: 4x06 | Airdate: Jul 23, 2023
A young mother is found murdered in her home and there are two suspects with ample motive, but an unusual interview and security camera footage have investigators puzzled.
Episode: 4x07 | Airdate: Jul 30, 2023
After the discovery of the brutal murder of an 18-year-old desk clerk of a beachfront condo, analysts use brand-new mitochondrial DNA technology to prove the killer's identity.
Episode: 4x08 | Airdate: Jul 30, 2023
July Fourth weekend leads to tragedy for a California family; to catch a killer, detectives utilize an unorthodox technique -- analyzing bug fragments -- to help put a murderer behind bars.
Episode: 4x09 | Airdate: Aug 6, 2023
A Texas love triangle turns deadly, and it appears to be an open and shut case until technology tells the tale.
Episode: 4x10 | Airdate: Aug 6, 2023
A 33-year-old West Virginia husband and father seemingly dies in an accidental house fire. But a closer look at the scene reveals a more sinister case.
Episode: 4x11 | Airdate: Aug 13, 2023
A family mourns the unexpected death of a beloved grandmother at Christmas, and while local police assure everyone that she was the victim of a tragic accident and that there is no foul play, some things about the scene don't add up.
Episode: 4x12 | Airdate: Aug 13, 2023
When the 20-year-old clerk of an Atlanta-area smoke shop is gunned down during a robbery, investigators have only descriptions of the killers and the make of their getaway car; investigators use a videotaped confession to smoke out the killers.