She was billed as Elaine Davis in her early acting roles, including her first film, The Atomic Kid, in which she and Rooney co-starred. Devry made three guest appearances on Perry Mason, including the title role of defendant Janice Wainwright in the 1962 episode, "The Case of the Shapely Shadow." She also appeared in many other popular television series, including Bonanza, 77 Sunset Strip, Burke's Law, Family Affair, I Dream of Jeannie, Marcus Welby, M.D. and Tales of Wells Fargo.