More Than This: The team probe the disappearance of a young man from a wealthy family who recently completed community service following a drug bust. (S4, ep 20) [S]
Expectations: When a pregnant woman disappears after a doctor's appointment, the team discovers that she and her husband had marital problems in the past. (S4, ep 19) [S]
The Road Home: The team investigates the disappearance of a teenage bike messenger. Meanwhile, Sam discovers Martin's secret addiction and asks Danny to help him. (S4, ep 18) [S]
Check Your Head: When an advice columnist vanishes, the team suspects foul play considering the woman hadn't left her home in two years. Christina Hendricks guest stars. (S4, ep 17) [S]
The Little Things: While the team investigate a suspected kidnapping-for-ransom of a child, Danny confronts Martin about his erratic behaviour. (S4, ep 16) [S]
Rage: When a prep-school teacher vanishes, the team discovers that one of her students, whom she'd been privately tutoring, is also missing. (S4, ep 13) [S]
Patient X: The team investigates a former patient of a missing therapist, although they don't actually know the identity of the patient. (S4, ep 12) [S]
When Darkness Falls: Sam helps a woman who is brought in suffering from amnesia. Meanwhile, Jack learns that his dad is ill and tries to convince him to have an operation. (S4, ep 10) [S]
Freefall: Jack leads the search for an old friend in the Bureau who disappears after his inexperienced partner is murdered. Meanwhile, Martin sustains an injury. (S4, ep 9) [S]
A Day In The Life: The team's latest case unfolds from the point of view of parents whose son went to an arcade on his bike in the evening and never came home. (S4, ep 8) [S]
Viuda Negra: When a wealthy American is kidnapped and held for ransom while on holiday with his wife in Mexico, Jack and Danny go south of the border to investigate. (S4, ep 6) [S]
Lost Time: Jack and Vivian revisit an old case when new evidence suggests that a college professor serving time for killing a student might be innocent, despite his confession. (S4, ep 4) [S]
From The Ashes: A new agent, Elena Delgado, joins the FBI's Missing Persons Unit but soon finds that her NYPD vice training runs contrary to the team's usual methods. (S4, ep 3) [S]
Safe: When the team investigate the disappearance of a high school student, Vivian complains that Jack is treating her too cautiously after her recovery. (S4, ep 2) [S]
Showdown: Continuing from the season three finale, Jack, Sam and Danny lead a manhunt when Martin is critically wounded after he and Danny are ambushed by Dornvald. (S4, ep 1) [S]
End Game: In the season three finale, the search for a missing woman leads the team into an international political struggle involving an African terrorist organisation. (S3, ep 23) [S]
John Michaels: Jack's personal life and inner struggles collide with his work when he handles a case involving a missing man whose family troubles mirror his in many ways. (S3, ep 22) [S]
Off The Tracks: When his brother disappears, Danny suspects financial troubles may be a factor after learning that he had recently applied for a business loan. (S3, ep 21) [S]
The Bogie Man: When a teenager disappears from a small town, locals suspect that a man they believe killed a girl years before is involved. John Krasinski guest stars. (S3, ep 20) [S]
Transitions: While the team investigate the disappearance of a woman that could be the result of a hate crime, Vivian tries to hide her condition from her colleagues. (S3, ep 18) [S]
Lone Star: When an estate agent vanishes, clues about his disappearance reveal a secret life and lead the detectives to a slavery and prostitution ring. (S3, ep 17) [S]
Manhunt: When Martin witnesses the abduction of a boy but is unable to stop the kidnapper, he becomes determined to find the missing child. (S3, ep 16) [S]
Party Girl: The Missing Persons Unit is called into action when a young and beautiful publishing heiress vanishes while on her way to a party. (S3, ep 15) [S]
Neither Rain Nor Sleet: While the team investigates the disappearance of a postal worker, Vivian hides a personal problem from her colleagues. (S3, ep 14)
Volcano: An autistic boy vanishes during a school trip to a museum, leaving behind his wrist locator, which is found cut and discarded. (S3, ep 13) [S]
Malone v Malone: As the team celebrates the holidays with an office party, Jack endures a traumatic deposition in his custody battle for his daughters. (S3, ep 10) [S]
Trials: When a juror in a murder trial vanishes, suspicion falls on the defendant, a gang member who could get a mistrial if the man is not found. (S3, ep 9) [S]
Doppelganger II: A previous case is revisited when a woman disappears from a shelter whose manager is the identical twin of a man arrested five months earlier for murder. (S3, ep 8) [S]
Nickel And Dimed, Part 2: Conclusion of a two-part story. Samantha goes undercover in a bid to find a missing mother who is involved with drug traffickers. (S3, ep 7) [S]
Nickel And Dimed, Part 1: When a single mother leaves her three-year-old son with a babysitter and vanishes, the investigation personally affects Samantha. (S3, ep 6) [S]
American Goddess: The team are called in when the winner of an extreme-makeover reality contest vanishes at the height of her fame. Saved by the Bell's Elizabeth Berkley guests. (S3, ep 5) [S]
Upstairs, Downstairs: The team investigate when a wealthy couple's nanny vanishes on the night she was fired after being accused of stealing from the family. (S3, ep 4) [S]
Light Years: The team searches for a man who believes that he was abducted by aliens when he was young. Meanwhile, Jack prepares for a bitter and hostile divorce from Maria. (S3, ep 3) [S]
Thou Shalt Not...: The disappearance of a nurse driving home late at night is investigated. Elsewhere, tension mounts as Jack reports to Vivian as a subordinate. (S3, ep 2) [S]
In The Dark: Season three of the US crime drama. While Jack comes to terms with Maria's request for a divorce, the team investigate the disappearance of two young women. (S3, ep 1) [S]
Bait: The team investigate when a millionaire's wife and their two children vanish from their yacht, which is discovered with only the body of the murdered captain on board. (S2, ep 24) [S]
Lost And Found: An adopted teenager turns to Jack when she searches the web and discovers that she was kidnapped when she was a child, although has no memory of the event. (S2, ep 23) [S]
The Season: The team are called in to investigate when a university football coach disappears shortly after he loses his job following a bad season of results. (S2, ep 22) [S]
Two Families: When the father of a man who is about to be executed vanishes, the team believes he may have found evidence to prove his son's innocence. (S2, ep 21) [S]
Shadows: Martin enlists Sam's help when his aunt disappears. Meanwhile, Jack visits his father, who is in the early stages of Alzheimer's disease. (S2, ep 20) [S]
Doppelganger: When a woman vanishes the night before a move to a new state, her boyfriend and his twin brother are both suspected of being involved. (S2, ep 19) [S]
Legacy: When the owner of a hair salon vanishes, suspicions lean towards the man's son, who had a strained relationship with his father and a possible motive for murder. (S2, ep 18) [S]