The team tries to determine whether or not the recent disappearance of an air traffic controller has connections to the Middle East. The team soon learns that his wife died in an automobile accident and he was having an affair with her sister.

The episode was rated 7.72 from 57 votes.

A teenage girl disappears after joining a cult. In the office, Elena encounters problems with Carlos in their custody battle for Sofie.

The episode was rated 7.72 from 36 votes.

Vivian thinks about her recent surgical problems while searching for a missing woman with a terminal condition.

The episode was rated 7.73 from 44 votes.

A high school student goes missing after leaving her prom early to get some rest in her hotel room, leaving behind a bloody dress and a lot of questions about what may have happened to her.

The episode was rated 7.75 from 48 votes.

The team investigates when Malia Norton, a teenager at a detention center, disappears after being threatened by one of the other residents. Malia had been involved in a drinking and driving accident that had seriously injured her sister's boyfriend and killed another young man. The investigation at the detention center uncovers a lot of secrets that some of the residents would prefer to keep well hidden.

The episode was rated 7.76 from 58 votes.

A former soldier, now stuntman, goes missing and the team learns that he changed his will only short time before he went missing which makes them wonder who needed the money.

The episode was rated 7.76 from 46 votes.

A newly elected senator goes missing and Jack immediately turns his attention towards her husband.

The episode was rated 7.76 from 46 votes.

Elena is frantic when her daughter Sofie goes missing, and the team has a full schedule as they must also search for a missing female tourist named Jenny.

The episode was rated 7.78 from 50 votes.

The team searches for missing water plant supervisor Jason Turner, and learn that he had become the target of a lot of anger after recent layoffs at the plant. Carlos comes to the office looking for Elena.

The episode was rated 7.80 from 49 votes.

Jack and the team investigate when Sadik Marku's son goes missing along with the boy's mother, and Samantha worries that Jack is more interested in settling an old score with Marku than with finding the missing woman and boy.

The episode was rated 7.81 from 54 votes.

The team investigates the disappearance of social worker Eric Hayes, who had given thirty days notice to his job not long before. When their investigation leads them to a young pregnant woman who had already lost one child to the system, the agents begin to believe the disillusioned social worker may have been having an affair but soon discover that he may have been trying to right the wrong that drove him from his job. Danny has trouble with the investigation, as it reminds him of his own experience in foster care. Jack confides in Samantha about his relationship with Ann, but it may be too late.

The episode was rated 7.84 from 45 votes.

The team searches for Jessica, a 911 operator who disappeared after a man called and asked for her by name.

The episode was rated 7.86 from 57 votes.

Barry Rosen goes missing shortly after being poisoned with bleach in a chili eating contest. While investigating Barry's disappearance, the team soon learns that he had been approached to throw the eating contest, and also that he had been spending a lot of time with a local prostitute in an effort to learn how to act around women. Danny is caught in the middle when Carlos asks him for a letter of reference in an upcoming custody review, and Elena informs him that Carlos is actually suing her for sole custody of Sofie. Danny warns Carlos that he is not going to be caught in the middle.

The episode was rated 7.90 from 49 votes.

Bryan Parker is questioned by the FBI after being found alone on the road by a police officer, his hand bandaged. He tells them about a young boy his father had abducted, and soon the team is searching for Todd. The search initially goes nowhere, and Sam continues to question Bryan, but they get a lead when Bryan identifies a snapshot of the boy that reveals his identity to be that of missing boy Daniel Ellison. It isn't long before the squad realises that Daniel isn't the first boy that Parker grabbed, and follow his past to find him and the missing boy.

The episode was rated 7.93 from 56 votes.

The team investigates when Aaron Gibbs ends up missing one night and soon learn that he had been lying to his wife about quitting his job, and had been working nights in a fight club. During the course of the investigation, Jack and the others learn that Aaron's disappearance was connected to events that took place during Hurricane Katrina, when Aaron was fighting to save his sons, and follow the trail of evidence, believing that the events of that night in New Orleans hold the key to finding the truth about the missing man.

The episode was rated 7.94 from 52 votes.