Park Hills, Mo.

True crime. Real justice. To miss it would be a crime.

Investigators were puzzled when the beaten body of an unidentified woman was found dumped near a Florida highway. The next day, a bloody motel room was discovered. Were the crime scenes connected?

The suspects in Aileen Seiden's murder case — her romantic partners Zach Abell and Christina Aruajo — each claims the other is her killer.

Three people check into a Florida motel room. Only two walk out alive. "48 Hours" correspondent Peter Van Sant reports.

A security camera recorded audio of a violent argument just before Matthew Trussler's death, authorities said.