William James Sidis, Marilyn vos Savant, and Leonardo da Vinci have some of the highest IQs in history — but are they really the world's smartest people?

Dixon Dario Trujillo-Blanco learned the art of drug trafficking from his own mother at an early age — then he unintentionally helped authorities take his entire family down.

When Ken McElroy was shot in broad daylight in front of dozens of witnesses on July 10, 1981, not a single citizen of Skidmore, Missouri called an ambulance or said a word about who was responsible to the cops.

Bob Ross spent most of his 20 years in the U.S. Air Force stationed in Alaska, where he fell in love with the scenery and took a life-changing interest in painting.

A 19-year-old rugby player from Sydney, Sam Ballard contracted rat lungworm disease and spent eight long years paralyzed before dying in November 2018.

Nikki Catsouras died on October 31, 2006, when she crashed her father’s Porsche in Lake Forest, California. Then she became known as "Porsche Girl" when graphic photos of her decapitated body spread across the internet.

From Luis Garavito and "Dr. Death" to the "Monster of the Andes," these men slaughtered more than 100 victims each, making one of them the deadliest serial killer ever.

A diagnosed psychopath with a "genius" IQ, Paris Lee Bennett brutally murdered his younger sister on February 4, 2007 — and considered killing their mother too.

Also known as the Catherine wheel or simply the wheel, the breaking wheel crushed the limbs and bones of the condemned, sometimes over the course of several days.

Not only did Anna Genovese testify about Vito Genovese's criminal activities in open court, she also had multiple lesbian affairs — yet she lived peacefully into old age and was buried by her former husband's side.