Guest Stars George Voskovec as Niles Patricia Medina as Mrs. Corot Heidi Vaughn as Marie Fenlon Co Starring Paul Mantee as Frank Viola Len Wayland as Chief Wedlow Nicholas Cortland as Gilbert Douglas Bert Kramer as Boyle Tom Stewart as Dr. Norman Wellesley Gregory Morton as Prof. Brooks Fenlon William H. Burton Jr. as Harker Bob Orrison as Kalish Patty Elder as Barbara Uncredited Jack Clinton as Agent Steven Benson as Waiter
