When a therapist vanishes, the team suspects that one of her former patients may have been involved.
Martin and Danny attempt to dodge a hail of bullets as a mercenary and his cronies try to kill their true target.
The team investigates if 15-year-old whiz kid Ryan Wallace is missing of his own accord in order to execute his elaborate plan to bomb his high school.
The team's newest member, FBI rookie Elena Delgado, formerly of the NYPD, encounters a learning curve as she attempts to help search for missing 20-year-old Dina Kingston.
When the backpack and ID of missing college coed Skye Petersen are suddenly dropped off at a thrift store seven years after, Jack determine she was murdered by her married professor with whom she'd just ended an affair, the team decides to reopen the case.
The team searches for 25-year-old Korean-American Wendy Kim, who vanishes after a fight with her new boyfriend during her night shift at her parents' deli.
Jack and Danny head to Mexico to find a wealthy American vacationer who was abducted at gunpoint in front of his new wife, Lydia Costin.
Jack and the team search for a man, Bill Shields, who reportedly let his marriage and career slip away after his teenaged daughter succumbed to leukemia.
Susan and Larry Hopkins desperately call the authorities when they realize their son, Shawn, has missed his curfew.
The team searches for Jack's friend Max Cassidy, a longtime FBI agent who disappears after leaving an emotional message on the answering machine of his wife.
Samantha investigates the case of a woman with amnesia who may not only be a missing person but a murderer.
A dedicated paramedic disappears from a hospital moments after successfully treating a young thug who was wounded in a shootout.
While searching for a missing middle school teacher, the team begins to suspect that she may be having an inappropriate relationship with a 14-year-old student who is also nowhere to be found.
When an ex-Marine, Andy Reynolds, disappears, Jack learns that Andy was accused of rape, dishonorably discharged and imprisoned in Japan for five years before returning to the U.S.
While investigating the disappearance of Leah Robinson, the team begins to suspect that she may not be as innocent as her husband and minister think she is.
The team members attempt to recover a 5-year-old boy, Ethan Heller, who was in the back seat of his family's SUV when it was apparently carjacked.
The team members search for Rachel, an agoraphobic advice columnist who had not left her apartment in 2 years.
After briefly looking for an 18-year-old, the team members realize that the real missing person is 15-year-old Matt Jameson, who was impersonating his former basketball league pal in order to work.
The team members search for a pregnant, HIV-positive woman, Megan, who vanished moments after she and her husband saw the ultrasound of their healthy late-term fetus.
The team searches for Breck Mulligan, a wealthy young man who disappeared from the inner city shelter for indigent women where he had volunteered as part of his sentence for drug possession.
Jack and the team work on the case of a young ice dancer, Kelly McMurphy, who has disappeared.
As the team members search for a recent widower, Ted, and his two teenaged kids, they attempt to determine who is responsible for the gunfire that left the missing family's living room splattered with blood.
When a white girl and a black boy coincidentally vanish on the same night, Jack attempts to counteract Vivian's prediction that the media and FBI will focus more on the white girl's case.
While investigating the disappearance of a former assistant district attorney, Jack talks to her boyfriend, Alan Davis.
