A boy says that his father has abducted a young child, but the investigation reveals that he may have been abducted too and that the man is not his father.
A wife and mother secretly working as a stripper disappears, and one of her co-workers turns up dead. Elena takes a job there to investigate undercover, and Danny becomes one of her "clients."
A teenage girl's escape from a juvenile detention facility could be related to the fateful night that got her in trouble and her older sister whose life may be in jeopardy.
An Albanian mobster's son disappears along with his mistress. Jack has a volatile past with the man, and hopes to use this as an opportunity to bust him for kidnapping.
The disappearance of a Hurricane Katrina survivor now living in New York City is related to a mysterious gold watch and a tragic incident that took place during the rescues.
A mentally disturbed woman disappears after a priest performs an exorcism on her. Everyone suspects that she was having strange visions, but the investigation reveals that she may have witnessed a real murder.
Jack goes undercover as a player at an illegal poker club in search of clues to a young member's disappearance. Then he is taken captive by a woman (Thompson) who believes he was hired to kill her.
The disappearance of a teenage high school basketball star exposes the shady underside of college basketball recruiting, and Jack and Anne have to deal with her miscarriage.
The investigation into the disappearance of a competitive eater turns up a reporter holding secrets about his past, a gambler trying to fix matches, and a prostitute and his dead pimp.
A water treatment plant supervisor disappears, and detectives discover that he is running from his old life in Arizona, where he may have been involved in a robbery and the disappearance of one of his friends.
A prominent congresswoman disappears on a boating trip, and is later found dead. The investigation suggests that it may be related to her vote on a controversial offshore drilling deal, but Jack is positive that her husband is involved.
A fifteen-year-old girl who is living with her grandfather disappears after last being seen at an Internet Cafe. Samantha's estranged sister makes an unexpected visit.
Sam's sister goes missing, so Sam decides to look for her without consulting with the rest of the team. Throughout her investigation, Sam's past unfolds.
The team searches for a stuntman who went missing shortly after completing a dangerous, fiery stunt. They discover that he received a death threat minutes before he vanished from the film set.
A girl disappears on prom night. Meanwhile, investigators discover that her drug-addicted boyfriend, believed to have been dead for months, may still be alive.
