Ivan Sidorenko, originally an artist, taught himself how to be a sniper for the Red Army. Turns out his true talent lay in the art of killing.

Ursula Haverbeck is now finally behind bars after years of making proclamations like "The Holocaust is the biggest and most sustainable lie in history."

Madalyn Murray O'Hair waged a 30-year-long war against religion in America, a battle that had her dubbed as 'The Most Hated Woman In America' by Life Magazine.

Erich Hartmann became Germany's top ace in just three short years with more than 350 aerial victories. His streak remains the deadliest in history.

Okunoshima was once used as a top-secret location for chemical weapons testing. All that remains today are thousands of feral rabbits, whose lives may still be in grave danger.

Though only 25-years-old when he died, Manfred von Richthofen downed more than 80 enemy planes in two short years of World War I, which earned him the formidable title of Red Baron.

British businessman Donald Crowhurst entered the 1968 Golden Globe Race to sail around the world, only to meet a tragic end in the Atlantic.

Jean-Baptiste Carrier, appointed by his government during the French Revolution, personally oversaw the execution of 13,000 counterrevolutionaries. 4,000 of which were sent to slow, watery deaths.

He escaped impenetrable prisons. He murdered mafiosos. He almost lived safely in secrecy, until the hitman became the target.

Legend says that his swords were so well-made, their layers went to a point that was but one atom thick.