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For six decades, police work to identify the person who murdered a 9-year-old girl.

Police spend decades trying to identify a baby whose body was discovered in 1982.

Police work to identify the perpetrator of a brutal murder from 1980.

For 15 years, northern California is haunted by a serial rapist until genetic genealogy finally reveals the identity of the elusive sexual predator.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

A respected couple's murder leaves police puzzled and a blood-stained card at the scene is looked at again in the hopes it will yield new clues.