Though he was born into a Roman Catholic family, Adolfo Constanzo quickly fell into alternative religion, focusing on black magic and the occult.

While Jesses James preferred the spotlight, his brother Frank James preferred a good book and the company of his family. Still, his gun was always at the ready.

On May 15, 2006, David Sharp died on the Northeast Ridge of Mount Everest after becoming immobile due to frostbite and a lack of oxygen. The 40 climbers who passed him as he struggled later faced harsh criticism for not trying harder to save him.

Drugs once contained all kinds of dangerous substances that were advertised as miracle cures

After being arrested, Abe Reles agreed to trade information on his fellow Murder Inc. hitmen. Then, he was found dead outside his jail cell – but did he really kill himself like the police said?

The controversial sex-research team pioneered the field of human sexuality and introduced ideas that are still widely used today.

Krystyna Skarbek spent the war intimidating Nazi's and threatening soldiers, but when it came to a jealous lover, she was no match.

Mary Thomas lead one of the largest revolts in the Danish West Indies and was condemned to death for her role.

Ernest Withers made a name for himself as an iconic Civil Rights photographer. But, within the FBI, he made a name for himself as a reliable informant.

"Flying Man" Otto Lilienthal soared against the clouds, captivating the imaginations of people all over the globe and inspiring a future generation of engineers and inventors.