Grave Secrets

In 1999, the discovery of a decomposed and mummified body in a barrel horrifies a new home owner; police are shocked to discover the victim was heavily pregnant.

Detective Pat Postiglione finds a woman's body at a truck stop, and the clues suggest her death came at the hands of a serial killer; then the focus shifts as suspicion falls on the victim's two drug-dealing friends.

In 2001, parishioners arrive at church, unaware they are passing a grisly crime scene in their own parking lot, where Tracey Bagwell has been stabbed 30 times in her car.

In 1987, women's bodies are found in a forest outside of Molalla, Ore.; detectives struggle to find a lead, then they get a break when another case shows similar characteristics.

A woman is devastated when her husband, Cody, disappears days after their wedding; then, she reports receiving an improbable email claiming that Cody died in a hiking accident, prompting detectives to fear this blushing bride is really a black widow.

Police are dubious when a woman reports her father, Dwight Tobyne, missing after eight months; none of the Tobynes seem eager to talk, but the family's secrets will lead detectives to a grim discovery in the Arizona desert.

This episode has no summary.

This episode has no summary.

A single footprint is the only clue uncovered after a man is found stabbed to death in his home; police suspect the victim's ex-wife after they learn of a bitter divorce and custody battle.

A 9-year-old girl vanishes while delivering cookies around an affluent neighborhood in Nashville, Tenn.; investigators turn up several suspects, but it takes more than 30 years for the case to be solved.