Some victims died because they happened to leave their doors unlocked. Others had been methodically stalked.
In 1989, Jacob Wetterling vanished without a trace. 26 years later, authorities have finally announced a person of interest in the case.
During his lifetime, Mengel was found guilty of two killings. Since then, evidence has pointed to the fact that he could be responsible for many more.
From a would-be presidential assassin to the decades-old "watcher" of a house in New Jersey.
Uncover the life and crimes behind the mugshots in this thrilling collection of vintage police photos.
Take a look inside the criminal mind ... literally.
The brutal slayings shocked the citizens of Australia and beyond.
The grisly crimes of these international killers prove madness knows no bounds.
The grisly inspiration behind these six cases from the hit police drama proves the truth is far bloodier than television.
From incriminating parking tickets to damning digital footprints, uncover the key clues that brought these notorious killers to justice.
Join the demon dog of American crime fiction, James Ellroy, as he handpicks his favorite crime scene shots from the LAPD archives.
These wealthy college students took to murdering a 14-year-old boy to prove their superiority – but sloppy mistakes soon exposed the clever pair as common killers.
Identical twins and doctors Stewart and Cyril Marcus did everything together ... including dying in a most mysterious fashion.
John George Haigh took the plunge into murder when he knocked out his old boss and dumped the body into acid – then set out to kill again.
What started as a quiet Sunday night for horror author Ray Garton suddenly turned into a violent, bloody scene straight out of his books.
From Gacy's bucket of fried chicken to McVeigh's bowl of ice cream, dig in to the last meals of America's death row inmates.
Cult leader Magdalena Solís convinced illiterate villagers she was a reincarnated goddess – then slaughtered her dissenters in brutal blood sacrifices.
Meet the tough female convicts of turn-of-the-century Australia in these stunning vintage mugshots.
Criminologist Scott Bonn knows his way around the mind of a serial killer – and he's sharing his secrets.