When the body of 19-year-old Ali Kemp was found by her father at a swimming pool in Leawood, Kan., in June 2002, her father goes on a quest to find is daughter's killer; news reports and interviews with investigators and family are featured.

Businesspeople John and Liz Calvert vanish in 2008 from Hilton Head, S.C.; friends, investigators and local reporters are shocked and in disbelief that a couple could disappear without a trace in such a peaceful place.

Alisha Sidie disappears from a small vacation town in Wisconsin in 2008; family, friends, local reporters and police investigators recall the fear and sadness the crime instilled on their tight community.

After 19-year-old college co-ed, Jessica O'Grady, went missing one night in May 2006, after leaving to see her boyfriend in Omaha, Neb., another woman disappears a week earlier which causes the locals to wonder if a serial killer is on the loose.

In August 1992, millionaire Tennessee landowner Allen Roberts arrives home to discover his wife is missing; he tells police he received a ransom call for Doe's safe return; slowly, the town turns on Allen, until police take note of one odd neighbor.

In August 2000, 17-year-old Jessica Carpenter is found murdered in her Aiken, S.C., home by her mother; local reporters and family members tell the story of a town frozen in terror as police search for a possible serial killer on the loose.