A woman driving solo to visit a friend on Florida's I-95 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.

A missing cheerleader and a seemingly unrelated roadside fire lead to investigations. As two cases converge, police juggle suspects and motives, until a surveillance video brings the investigation to a shocking conclusion.

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

A 16-year-old star student vanishes one night in 2004. Local police work to solve her disappearance, beginning a search that leads them into a world of dark secrets and dangerous players.

Twenty-eight-year-old army veteran and beloved father of three, Joey Fulgham, is shot dead in his bed. Police identify multiple potential suspects -- Joey's wife, her jealous boyfriend and even her protective teenage brother.

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.

After helping a friend fix his computer, teenage tech prodigy Sam Poss takes off on foot and never returns home. Police work around the clock to determine what happened -- if there had been an accident, if he ran away or worse.

In July of 2006, 22-year-old Tori Vienneau and her 10 month-old son, Dean, are both found strangled in their home. As San Diego Police delve into Tori's life, they uncover a complicated romance and evidence to make an arrest.