A woman driving solo to visit a friend on Florida's I-95 mysteriously vanishes. Her divorce leads police one way, but when her body is found it suggests something horribly different. Another woman who reads about the case has a hunch she knows the killer.

A missing cheerleader. A seemingly unrelated roadside fire. As two cases converge, police juggle numerous suspects and motives, until a cryptic surveillance video brings the investigation to a shocking conclusion of betrayal, devotion, and murder.

When a young woman vanishes from a New Mexico convenience store, two detectives discover tracks in the dirt that may lead them to answers. After a second woman disappears, it's a race against time to stop a potential serial killer.

16 year-old Brittney Gregory is a star student in Brick Township, NJ. When she vanishes one night in 2004, local police begin a search that leads them into a world of dark secrets and dangerous players as they work to solve her disappearance.

28-year-old Army veteran and beloved father of three, Joey Fulgham, is shot dead in his bed in May 2003. With so many suspects - Joey's wife, her jealous boyfriend, and even her protective teenage brother - police have a lot of ground to cover.

When an Arkansas outdoorsman disappears, authorities wade through a series of accusations and rumors in their hunt for the missing man. As they zero in on a suspect and the body count rises, detectives rush to capture the killer before it's too late.

In October 2016, after helping a friend fix his computer, 18-year-old tech prodigy, Sam Poss, takes off on foot and never returns home. Did the beloved teen run away? Was there an accident? Police work around the clock to find the truth.