Ingesting just two to four berries from Atropa belladonna can kill a child. Ten to 20 berries can kill an adult.

David Kaczynski felt he had no choice but to turn his beloved older brother over to the FBI, who as the Unabomber, killed three people over a 17-year span — and injured many more.

Created by a disgruntled pirate radio broadcaster named Paddy Roy Bates in 1967, Sealand is an unrecognized micronation in the North Sea with its own constitution, national flag, and passport.

When Woody Harrelson was a kid, his father was just a normal dad. But by the time Woody was an adult, Charles Harrelson was a twice-incarcerated hitman.

At 2.5 inches with stubby legs and a squeaky-toy squeal, you've seen or heard nothing like the desert rain frog.

The horrifying 12 days that made up the 1916 shark attacks along the New Jersey coast spawned a mass fear and paranoia for sharks that we still feel today.

Born into slavery, Bill Richmond managed to get to England where the free man became the country's biggest and potentially first, African-American athletic celeb.

Clandestine, slippery, and young — John Surratt was the only co-conspirator who evaded justice after the assassination of President Lincoln.

At just 20, Matthäus Hetzenauer became the most successful snipers in the Third Reich — and one of the most decorated.

Robert Chambers murdered 18-year-old Jennifer Levin in cold blood. And his run-ins with the law didn't end there.

By some accounts, the self-proclaimed "Angel of Death" killed upwards of 70 people in and out of hospitals across Kentucky and Ohio.