Helen Gibson’s strong, handsome face and dark hair gave her the look of someone who would try anything. In 1915, while in her early twenties, she was doubling for the star The Hazards of Helen. She was supposed to leap from the roof of the station to the top of a moving train. Years later, she called it her most dangerous stunt.
Becoming a stuntwoman is especially difficult in an industry where men often play female characters. But more performers are breaking through.
A woman is doubled over on a platform, clutching her stomach. She screams, then flops 4.5 metres (15ft) on to a giant airbag. To my left, a dozen people...