Robert John Bardo was obsessed with Rebecca Schaeffer. He wrote her fan mail, drew portraits of her, and stalked her at the studio until one day, he found her home address.

After Enrique "Kiki" Camarena was found out by the Guadalajara cartel in 1985, he was kidnapped and tortured to death over the course of three days. Later, the anti-drug campaign known as Red Ribbon Week was established in his honor.

Serial killer Mary Bell was 11 years old when she was sentenced to life in prison for killing two toddlers in 1968 — but she now lives in anonymity after being freed just 12 years later.

Over an eight-month period in 1984, Bobby Joe Long raped and murdered at least ten women before a 17-year-old victim escaped his clutches and led police to his capture.

Neanderthals are often characterized as primitive and unintelligent, but this extinct hominin species was made up of sophisticated hunters who preyed on megafauna.

The head of a 45-member clan in Scotland, Sawney Bean allegedly killed and cannibalized over 1,000 victims in the early 16th century. But did he even exist?

During a debate between Japan's major political parties in October 1960, socialist leader Inejirō Asanuma was assassinated by 17-year-old Otoya Yamaguchi with a samurai sword.

The Broaddus family thought they'd bought their dream home at 657 Boulevard in Westfield, New Jersey — until "The Watcher" started leaving them notes.

After being hanged in 1841 for throwing 70 people off of an aqueduct in Lisbon, Diogo Alves' preserved head has been in a jar in a university lab.

For centuries, researchers have puzzled over the ingredients in a 2,300-year-old Chinese recipe for bronze. Now, they think they've finally figured them out.

Since early July, at least 58 residents have been attacked by a group of violent macaques in the city of Yamaguchi. Now, authorities believe they have brought one of them to justice.