A rat king forms when the tails of many rodents become tangled together, creating a disturbing creature that moves as one swarming mass of terror.

The discovery was kept a secret since July, but experts have since found further artifacts in the same area.

Kendrick Johnson was found dead in January 2013 in a rolled-up gym mat at Lowndes High School in Valdosta, Georgia. Was it a terrible accident or something more sinister?

In February 1984, Christopher Wilder embarked on a seven-week, cross-country murder spree, torturing and killing at least eight aspiring models and earning himself the nickname "The Beauty Queen Killer."

An actress who starred in iconic films like "Breathless" and "Bonjour Tristesse," Jean Seberg would have her life destroyed by a government smear campaign in the 1970s.

After Rebecca Schaeffer was murdered by unhinged fan Robert John Bardo on July 18, 1989, California passed groundbreaking laws to prevent stalking.

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.