DNA evidence suggests that a Polish immigrant named Aaron Kosminski who was working as a hairdresser in London's Whitechapel district in 1888 may have been the infamous serial killer Jack the Ripper.

After years of struggling under the strict rule of her "tiger parents," 24-year-old Jennifer Pan finally snapped in 2010 — and hired hitmen to kill them.

From 1974 to 1986, the Golden State Killer was a serial killer and rapist who terrorized residents across California — and Joseph James DeAngelo almost got away with it all.

A squid-like beast said to live in the sea between Norway and Iceland, the Kraken is one of the world's most legendary sea creatures.

A terrifying cryptid with the head of a dog, the body of a man, and a bone-chilling scream, the Michigan Dogman is said to prowl the forests of northern Michigan.

The 6,000-foot mountaintop once held temples, the homes of rulers, and a games court.

From 1974 to 1986, an ex-cop named Joseph DeAngelo terrorized California as the Golden State Killer — and lived a normal family life for decades before being caught.

Vito Genovese rose through New York's criminal underworld during Prohibition and eventually became a Mafia boss before the fallout of the Apalachin meeting ended his reign.

After two failed inquiries in 1947 and 1963, a team of investigators believes that a Jewish notary betrayed Anne Frank's hiding place to protect his family from deportation.

Though some believe that an alien craft called the Black Knight Satellite is orbiting Earth, NASA says that any photographic "proof" merely depicts space junk.

"It’s a known legend, people know that it’s still out there in deep water. Everyone will be after it, won’t they?"