On May 30, 1899, history was made when Pearl Hart, disguised as a man, held up a stagecoach in Arizona and robbed the passengers at gunpoint. A manhunt ensued as word of her heist spread, and Pearl Hart went on to become a media sensation and the most notorious female outlaw on the Western frontier. Her early life, family and fate after her later release from prison have long remained a mystery to scholars and historians, until now.