 Malvern's first major stunt appearance was doubling for Eileen Sedgwick in "Beasts of Paradise" (1923).In 1928, Malvern suffered serious injuries in a -fall, and he retired from stunt performing, subsequently working as a producer for Universal Pictures and Monogram.Malvern married his wife, Jean Huntley, in 1932, to whom he was married until her death in 1979.