Elmer McCurdy was an ambitious, turn-of-the-20th-century outlaw whose death at the hands of a Western posse ended a life of failed crime and alcoholism and began a brilliant career as a mummified side-show attraction that travelled the USA for decades. By the time this journey ended, his name had been forgotten and his desiccated body was hanging in a house-of-horrors ride at an amusement park in Southern California, spray-painted a day-glo orange. Then one day, a grip for the Six-Million Dollar Man TV show jostled what he thought was “just a dummy” and an arm fell off, revealing a human bone and beginning a hunt for the origins of this enigma.