A notorious American frontier outlaw, Billy the Kid killed several men before being guned down at age 21, cementing his legacy as a legendary yet ruthless symbol of the Wild West.

James "Jimmy the Gent" Burke was a brutal and calculating Lucchese crime family associate, best known as the mastermind behind the 1978 Lufthansa heist and for his ruthless tendency to eliminate anyone who could link him to his crimes

Ángel Maturino Reséndiz, known as the "Railroad Killer," was a notorious serial killer who terrorized the United States in the late 1990s by murdering victims in or near their homes after traveling across the country via freight trains.

Napoleon Bonaparte’s insatiable ambition transformed him from a brilliant defender of the French Revolution into an infamous, power-hungry autocrat whose relentless pursuit of empire plunged Europe into decades of devastating warfare.

Marshall Applewhite was the deeply deluded co-founder of the Heaven's Gate cult who convinced 38 of his followers to commit mass suicide in 1997, believing their souls would ascend to an alien spacecraft trailing the Hale-Bopp comet.

Jimmy Hoffa was a powerful and controversial labor union leader whose immense influence over the Teamsters and notorious ties to organized crime culminated in his mysterious 1975 disappearance, which remains one of America's most famous unsolved riddles.

The Harpe brothers, Micajah "Big" Harpe and Wiley "Little" Harpe, were America's first documented serial killers, operating as brutal highwaymen who murdered dozens of men, women, and children across the frontier in the late 18th century.

Jesse James was an American outlaw and train robber who parlayed his brutal, confederate-aligned guerrilla violence into a mythicized, Robin Hood-style legend of anti-government rebellion.

Dubbed "Mother Rasputin" by the press, Mariam Soulakiotis was a Greek Old Calendarist abbess who used her convent as a front to systematically torture, defraud, and murder dozens of wealthy followers and vulnerable patients between 1939 and 1950.

Gerald Stano was an American serial killer executed in 1998 who was convicted of nine murders, though he controversially confessed to killing 41 girls and young women across Florida, New Jersey, and Pennsylvania.