Stuntwoman and actress Mary Katherine Peters was born in California. The youngest daughter of a California policeman, Mary ran track and field in high school. Peters began her career in the entertainment industry as a model for 20th Century Fox. Mary's big break as an actress happened after she was cast as an extra for five years on the hit TV series MASH (1972). Peters attended various professional schools to learn all about performing stunts whenever MASH (1972) was on its six month filming hiatus and began her career as a stuntwoman in 1976. Among the notable actresses that Mary has doubled for are Vanessa Redgrave, Sigourney Weaver,, Joan Cusack, Mary Gross, Delia Sheppard, Lindsay Wagner, and Lynn Redgrave. Peters moved with her husband Stewart to Oklahoma in 2000. Moreover, her son Matthew Senour works as an aerospace engineer for the global security company Northrup Grumman. Mary spends her spare time playing golf when she isn't doing either community work or interior design.