Guest Stars Kent Smith as Edgar Scoville Lin McCarthy as Col. Archie Harmon Ross Elliott as Prof. Eliot Kramer John Milford as Jim Bryce Donald Davis as Lucien Charles J. Stewart as Robertson Ed Prentiss as Stanley Leeds Ahna Capri as Joan Surrat Walter Baldwin as Walter Co Starring Don Chastain as Blake Pamela Curran as Louise Ken Lynch as Lieutenant Conners Warren Vanders as Earl Uncredited William Woodson voices Narrator Craig Chudy as Alien Rudy Germane as Reporter Sid Troy as Police Officer Orwin C. Harvey as Alien Fighting with Kramer