The fourth season of the television drama Without a Trace premiered September 29, 2005 on CBS and ended on May 18, 2006. There are 24 episodes in this season. Roselyn Sanchez joins the cast as Elena Delgado in this season.
The fourth season of Without a Trace has not been released on DVD in region 1 but was released in region 2 in Germany on May 15, 2008 on and in the UK on July 14, 2008. In region 4 the fourth season was released on July 1, 2009
The fourth season premiere picks up where the third season finale ended. Martin and Danny attempt to dodge a hail of bullets as a mercenary and his cronies try to kill their true target, an FBI detainee whom the agents are transporting.
The team investigates if 15-year-old whiz kid Ryan Wallace (SHANE HABOUCHA) 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.
The backpack and ID of missing college coed Skye Petersen are suddenly dropped off at a thrift store seven years after Jack--and ultimately the legal system--determined she was murdered by her married professor with whom she'd just ended an affair.
The team searches for 25-year-old Korean-American Wendy Kim (NICOLE BILDERBACK), 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 (ALEX KINGSTON - "ER"). Kingston's fellow former "ER" star Paul McCrane directed the episode.
Jack and the team search for a man, Bill Shields (Emmy Award winner GORDON CLAPP - "NYPD Blue"), who reportedly let his marriage and career slip away after his teenaged daughter succumbed to leukemia.
This unique episode, told from the point of view of the missing person's parents, expresses the emotional anguish of the mother and father of a missing 15-year-old boy as the team does its best to find him.
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, FBI agent Anne Cassidy, about the murder of his partner, Jimmy Haggerty.
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 during which he killed a rival gang member.
When a therapist vanishes, the team suspects that one of her former patients, whose identity is unknown, may have been involved.
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 (SCOTT HOLROYD), 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, a churchgoing, suburban stay-at-home mother of a 12-year-old boy, 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 (JOSEPH CASTANON), 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. While casing her apartment for clues, they ponder the relevance of a walkie-talkie.
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 as a messenger and apprentice locksmith.
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 (JAMES SNYDER), 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. They learn that Kelly's brother, Jason, a hockey player, recently died in a car accident.
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. When Davis senses that he is in fact a suspect, he goes berserk and causes a shootout in the FBI offices.