A school bus is abducted by kidnappers who demand more and more for ransom.

When a priest disappears Jack begins to think that the man is involved in some wrongdoing rather than the possible victim of a crime.

A missing-persons case becomes a criminal investigation when, after a recently engaged woman disappears, it turns out that she was running a confidence scheme.

When a 14-year-old violinist disappears on the night of a concert, the team follows her and her valuable violin's trail and Samantha bravely tries to recover from the gunshot wound.

Malone searches for a missing woman whose description matches those of a series of murder victims from a 12-year-old case only to learn that Graham Spaulding is pulling the strings, and drawing on incidents in Jack's past to lure him into a trap.

When a high school sex-scandal leads to murder it is the team's job to figure out who did it and why.

The team is baffled as to why no family members come forward after a Latino boy is abducted in mildde of the day time from a street in Spanish Harlem.

After A fireman heroically pulled two people from a burning building he vanishes. The team begin to suspect some firemen might be guilty of arson.

The team search for a Doctor that has disappeared after a jog in the city with her ex-husband

When Luke Horton disappears after a class reunion, the team initiates a search for him, and learn that Luke was living a double life and was finally ready to come clean.

The team has a wealth of suspects from which to choose as they search for a missing paparazzo who felt responsible when one of his pictures outing a TV star led to the actor's ruin and eventual suicide, and vowed to redeem himself and his career by helping an environmental watchdog group expose a corporation's cancer-causing pollution.

The team searches for a missing criminal defense attorney. While investigating the man's life, Jack begins to believe that his recent behavior is the result of paranoid schizophrenia.

When a female ex-cop-turned-bounty-hunter is shot then goes missing the team must investigatesher were about's

A 12 year old boy (Jake Thomas) goes missing. The team discovers that the boy had a rough 24 hours leading up to his disappearance. He disappeared in the middle of the school day, the only clues a broken miror, a discarded hall pass, and blood on the wall....until a picture of him is sent around the school.

A new lead reveals details about a missing woman's sexual history.

When a young soldier recently returned from Iraq disappears, Jack and Danny look into his disappearance only to learn that the soldier may have more secrets than they want to uncover.

The team searches for a man who goes missing after leaving his wife's hair salon to deposit the day's earnings following an argument with her. Meanwhile, Danny resists getting pulled back into the life of his convict brother who is up for parole, and Martin's impending firearms qualifications test dredges up unsettling memories for him.

The team investigates a missing woman's boyfriend, with whom she lived. However, they determine that he has a twin brother and quickly turn their attention to him.

When Sam helps Martin search for his missing and terminally-ill aunt, they discover that she's been using her nursing skills to assist other dying patients in committing suicide; his father's Alzheimer's diagnosis prompts Jack to attempt a reconciliation.

When a father who goes missing while trying to prove that his son a death-row inmate who is scheduled to die in two days is innocence, The past 11 years of the missing Mans life have been devoted to proving that his son, was wrongly convicted of killing a young married couple in front of their daughter during a convenience story robbery. While the team does not rule out that the despondent man could have brought harm upon himself, the team members find themselves wondering if the man is right about his son innocence.

The team Looks for a college football coach who goes missing after being fired for his role in the team's dismal season performance,but the investigation soon uncovers that the Coach new policy of suspending players who have academic and behavioral issues caused the football team to repeatedly play without its main players and suffer defeats due to this rule. As a result of this, The team begin to suspect that it was some of the angry players, or members of the school administration and even a high-stakes gambler who all are facing financial losses resulting from the teams losing streak. Meanwhile, Malone must make a difficult decision when his wife surprises him with her strong desire to relocate their family to Chicago, where she has just been offered a superb job opportunity

When the team searches whether foul play was involved in the adoption of a 16-year-old girl who went missing back in 1991 shows up at the FBI offices with an article she found online, which makes her believe she was kidnapped as a young child. Meanwhile, Jack tells the team he's moving to Chicago with his family.

The team searches for a mother and her two children, who are last seen boarding a yacht which is later found adrift in New York's Harbor with only its dead captain aboard. Meanwhile, Malone gets ready to leave the team and move with his family to Chicago.