Friends say Karen Swift wasn't having a good time at a country club Halloween party in Dyersburg, Tennessee. The next morning, she went missing from her home.
Friends Carol Marlin and Margaret (Maggie) Ginn were found dead after meeting for dinner in Marietta, Georgia. But it would take the murder of Kasi Peek, years later, for the crimes to be solved.
A witness reported seeing a man "covered in mud and blood" the same day Libby German captured a video on her cell phone of a man instructing her and best friend Abby Williams to go "down the hill."
Fiction may be turning into reality on the set of a horror movie after a man disappears in real life near the set, as heard on The Man in the Black Mask.
For years Michael Hughes stalked the streets of Los Angeles looking for victims, until one critical mistake landed him behind bars, as detailed in Oxygen's Serial Killer Capital: Los Angeles.
Boston police officer John O'Keefe was found dead lying in the snow after a night of heavy drinking. His girlfriend at the time is accused of murder and reversing her car into him.
Keri Murphy, 16, called police to report a break-in at her family's Humble, Texas, home. Her mom Mary Ann Murphy was found murdered, leading to stunning revelations.
After a young father was murdered and a woman was stabbed to death in broad daylight, law enforcement had to determine whether the two crimes could be connected.
Typically known for Hollywood and sunny beaches, California has been the hunting ground for a disturbing number of serial killers, as evident in Oxygen's Serial Killer Capital: Los Angeles.
