One Deadly Mistake

After Amanda Snell's body was found in her closet at a military base, authorities eventually learned they had a serial killer on the loose.

Man’s best friend helped solve the case after Misty Morse was found dead in the Indian River.

Karyn Slover's body parts were found floating in bags in a central Illinois lake.

Amanda Plasse’s stabbing death went unsolved until detectives realized that her killer had left his name in plain sight at the crime scene.

This Valentine's Day weekend, Oxygen has programming all about the dark side of love, including a two-night special event, "Lover's Lane Murders."

A surprising clue led investigators to the serial killer behind the deaths of Maryland mother-daughter pairs. 

In Lubbock, Texas, a brutal killer murdered two women and stuffed their bodies inside suitcases. A tiny clue he left inside one led to his capture. 

A killer’s telltale clean-up routine after the vicious murders of Brook Baker and Erika Norman became the key to putting him behind bars. 

Plus, catch the premiere of new limited series, "Lovers' Lane Murders," which explores a string of murders along the Colonial Parkway in Virginia.

Kathy Blair's killer failed to figure out that even at 1 A.M., someone with a camera could be watching — and recording.