On New Year's Eve in 1812, Theodosia Burr Alston boarded a ship bound for New York to reunite with her father after the death of her child. She never made it.

Bobby Fischer became the World Chess Champion after defeating Soviet Boris Spassky in 1972 — then he descended into madness.

Measuring up to 13 feet long and weighing at least 1,200 pounds, the shortfin mako shark is a formidable predator in oceans all over the world.

Pablo Escobar's cousin and right-hand man, Gustavo Gaviria wielded untold power behind the scenes while helping to run the Medellín Cartel, until he was killed by Colombian police in 1990.

On a pig farm in La Porte, Indiana, Belle Gunness killed two of her husbands, a handful of single men, and several of her own children before mysteriously disappearing in 1908.

Before Ringo Starr, the Beatles toured with drummer Pete Best, but differences led to his ousting just before the band reached worldwide success.

On December 16, 1985, John Gotti oversaw the assassination of Gambino family boss Paul Castellano outside Sparks Steak House in Manhattan — a hit that would change the Mafia forever.

Since being discovered in 1926, the Nazca Lines have inspired countless theories about their origin. Are they extraterrestrial, a message from ancient civilizations, or something more sinister?

A gentleman gunslinger who could quote Shakespeare, Johnny Ringo was a mythic gunslinger who died a mysterious death befitting his legend.

Between 1830 and 1850, the U.S. government forced the Cherokee, the Choctaw, and other tribes off their ancestral lands with deadly force in what's become known as the Trail of Tears.

Fred Rogers, known as Mister Rogers, originally planned to become a Presbyterian minister. But he realized his true calling was teaching children how to love each other — and themselves.