Police learn of a sinister motive behind the murder of a woman in Philly.

Detectives learn the how and why after finding a woman dead in her bathtub.

Police turn to the neighbors for help finding a 78-year-old man's killer.

Police hunt down a dangerous killer suspected of murdering a mother.

Police pursue an elusive killer suspected of murdering a college student.

Police investigate the carefully planned murder of a beloved DJ.

A Washington couple vanishes before their annual Christmas party.

A brutal murder sends shockwaves through the carnival community, and every performer is a suspect. Lobster Boy's death reveals long-buried truths, and a reign of terror meets a shocking end. Life at the carnival will be forever changed.

A blackmail note suggests a Texas housewife's murder was a family affair.

A string of horrific murders ignite fear and frustration in Atlanta.

An inventive tactic gives law enforcement their first real lead.

Wayne Williams goes on trial, but questions linger about his guilt.

Corey Parker is found stabbed, and police race to catch the killer.

A couple's long weekend in the woods turns out to be a fateful trip.

A couple out running an errand quickly turns into a run for their lives.

A movie night turns into horror when two girls give a ride to a stranger.