Lie to Me - Episode Guide

Dr. Cal Lightman, an expert in how facial expressions and body language betray emotions, solves cases for law-enforcement agencies and whoever else hires him in this whodunit. In the pilot, a high-school teacher is murdered, and one of her students is caught running from her house; and the chairman of the House Ethics Committee is accused of patronizing a prostitute.

While Cal tries to determine the truthfulness of a female soldier's rape accusation against her sergeant, basketball fan Gillian probes a charge that an influential college alum bribed a promising inner-city prospect to attend his school.

The murder of a federal judge's teen daughter leads the Lightman Group to her highly competitive prep school. Meanwhile, a NASA test pilot is accused of intentionally crashing a plane.

The team is assigned to protect the South Korean ambassador, a presidential candidate in his country and the object of death threats, during his son's wedding. The ambassador isn't shot but his son is, and Cal doesn't think it was the result of bad aim. Besides, everyone in the wedding party seems to have something to hide.

A governor weighing a pardon for a reformed gang leader imprisoned for killing a cop hires Cal to determine if the guy has really reformed. Meanwhile, the death of a black probationary firefighter in a burning building might not have been accidental. Gillian must find out if it was murder and, if it was, who did it.

While Lightman and Foster probe the disappearance of an 11-year-old adopted girl, Loker and Torres must determine whether a Ugandan peace activist is who she claims to be. One problem: Loker is a fan of the woman, and they become attracted to each other when they meet.

Lightman is hired by an old friend to find a corporate spy at a pharmaceutical company, then gets mixed up in a conspiracy surrounding a new drug that could put thousands of lives at risk. Meanwhile, the State Department hires the team to assist with negotiations for the release of two U.S. citizens imprisoned in Yemen.

Cal becomes obsessed with the suicides of three young Indian-immigrant women, and Loker takes an unusual interest in the Ponzi scheme he and Foster are investigating. The scheme's operator, who's dying of cancer, insists that he is solely responsible for it, and that all the money is gone. But Foster---and especially Loker---aren't buying either assertion.

When a building under construction collapses, Cal and Gillian must determine if someone on the scene might have sabotaged it and how. The safety of workers still trapped inside could depend on it. Meanwhile, an Internet entrepreneur planning to propose to his girlfriend wants to know if she really loves him or if she's after his money.

Cal's ex-wife, an assistant U.S. attorney, hires him to get to the bottom of an arson case in which the victim accuses a childhood friend, who's now a famous TV reporter, of burning down his house. He bases the charge on the word of his 5-year-old son. Meanwhile, Foster and Torres investigate a drive-by shooting tied to a feud between rival rappers.

An undercover cop chasing a drug suspect mistakenly shoots an innocent teen, and Cal is hired to determine the man's intentions. Meanwhile, Loker's lie during a recent Ponzi-scheme investigation could come back to haunt him (and Torres as well) when Cal tells them that they'll be deposed in a lawsuit over the matter; and Cal's suspicions that Foster's husband is having an affair are raised anew when he sees him again with the woman he had seen her with before.

An FBI agent enlists the Lightman Group in the hunt for a serial rapist. Cal's assignment: infiltrate a prison and befriend a convict whom the suspect appears to be copycatting.

Following a terrorist attack outside Washington, D.C., FBI agent Reynolds enlists the Lightman Group to find the perpetrators. Then the case becomes personal for a member of the team. In addition, Cal and Zoe fear that their daughter could be in danger.

A woman with multiple personalities could be either a witness to a murder---or the killer. Meanwhile, the government hires the Lightman Group to question a possible Supreme Court nominee.

Zoe enlists the Lightman Group to probe a college-football star accused of statutory rape; Foster and Loker visit a religious compound to determine if it's a dangerous cult.

While vacationing in Mexico, Cal and Emily get involved in the case of a missing American woman. Back in D.C., Foster and Cal's rival, Jack Rader, investigates tainted blood in area hospitals.

A man is determined to prove that he didn't murder his wife, and his effort to do so puts the Lightman Group in danger.

An old friend of Cal's attempts to pull him into a criminal conspiracy. Meanwhile, the Lightman Group probes a high-school student's murderous threats.

Cal and Gillian probe the murder of a witness in a government case and discover that Agent Reynolds, the star witness in the case, is hiding something in his past.

A troubled teen who believes he was abducted as a baby wants to learn about his past. Meanwhile, Loker investigates a deadly stampede at a megastore the day after Thanksgiving.

Cal spends the holidays in Afghanistan, where he relies solely on an American expatriate to help a mission to find a pair of missing Marines.

Cal, Foster and Reynolds go all in to find a missing finalist from the World Series of Poker in Las Vegas, where Cal must determine if the other players are being straight with him about the disappearance. Meanwhile, an analysis of Loker's latest relationship allows him and Torres to get better acquainted in the process.

A protesting farmer parks his explosives-packed tractor near the U.S. Treasury building. Meanwhile, Loker plays babysitter to third-graders stuck in the Lightman Group offices.

Cal suspects that a charming psychology graduate student is a murderous psychopath, but the young man's teacher (who has a history with Cal) is protecting him. Meanwhile, Loker and Torres probe a claim by a teacher that he saw a UFO .

Cal and Gillian look back over events in their lives---including the therapy session at which they met---after a former colleague of Cal's at the Pentagon is killed in a car bombing.

Cal is a witness at the trial of a woman accused of murdering her much-older husband, a business tycoon.

Cal confronts unsettling truths in his past as he and his team try to save the lives of an Iraq War vet and his family.

After a housing-project shooting, the D.C. police ask Cal to read the face of a paralyzed victim, who can move only his eyes.

Torres recalls a difficult childhood and shares an uneasy reunion with her incarcerated half sister after the latter's fellow inmate disappears from a juvenile corrections facility.

When a gubernatorial race in Virginia turns deadly following the death of a young woman at a campaign event, the Lightman Group is tapped to explore conflicting scenarios of foul play.

Cal risks being exposed as a gambler when a fighter is found dead in an underground fight club. Meanwhile, Foster's romance with Burns is threatened when she discovers a secret.

Cal and Zoe are called to witness the execution of a man they helped send to death row 17 years before---and face the possibility that he's innocent.

Foster's boyfriend, Dave Burns, is kidnapped, and Cal must track him down with the help of Burns' mysterious ex-partner.

A young woman's disappearance leads to an investigation of crime in the pornography industry.

The probe of the murder of Cal's friend, a journalist who was investigating political corruption, tests Cal's relationship with Reynolds and the FBI. Meanwhile, Cal is uncomfortable with Emily's newfound interest in dating.

Tim tries to stop a man bent on revenge from robbing a bank and in the process holds a guilty man accountable for his actions.

Lightman defends a falsely accused man from an angry mob. In the course of proving his innocence, Lightman unearths a secret that allows a mother and daughter to begin to heal.

The Lightman Group is hired to look into police profiling following an incident involving Wallowski, and it turns out that Internal Affairs want Cal to incriminate her.

The Lightman Group's expertise is called into question when a woman plays cat-and-mouse with Cal while he's checking for security leaks at an art museum prior to a major exhibition.

Cal investigates a coal-mine explosion that killed six miners, and he suspects foul play. So to prove it he goes into the mine. Meanwhile, the FBI seeks the Lightman Group's aid again, and Foster and Torres offer to work pro bono.

Cal goes head-to-head with a self-help guru to free a wealthy woman who might be under his control. Cal also suspects the group of threatening him and Emily.

Cal helps a woman with early-onset Alzheimer's reconstruct a memory, and unearths a secret that could prove deadly in the process.

A terminally ill restaurateur hires Cal to track down his murdered daughter's killer. She had been first in line to inherit her father's successful restaurant chain, and Cal discovers that this fact could have something to do with her death.

Cal commits himself to a mental hospital to investigate whether a patient is being held there legitimately and comes to question his own sanity as well. He also confronts his past in hallucinations in which he reminisces with his late mother and confronts his father.

A wealthy woman wants Cal to conduct a background check on her new boyfriend, who turns out to be quite a "social chameleon."

Cal probes a fatal traffic accident caused by three teens.

Cal investigates the abduction of a baby and comes to believe that the child's mother is hiding something.

Cal probes the death of a social-network cofounder who had feared that she was being squeezed out by her partner.