Frederick De Cordova Director Ronald Reagan Prof. Peter Boyd Actor Diana Lynn Jane Linden Actor Walter Slezak Prof. Hans Neumann Actor Lucille Barkley Valerie Tillinghast Actor Jesse White Babcock Actor Herbert Heyes Dean Tillinghast Actor Herb Vigran Lt. Daggett Actor Harry Tyler Knucksy Breckenridge Actor Edward Clark Professor Fosdick Actor Edward Gargan Policeman Bill Actor Joel Friedkin Mr. DeWitt Actor Billy Mauch Student Actor Lou Breslow Screenwriter Val Burton Screenwriter Michael Kraike Producer Carl E. Guthrie Cinematographer Ted J. Kent Film Editing Frank Skinner Original Music Bernard Herzbrun Art Director Eric Orbom Art Director Russell A. Gausman Set Decoration Ruby R. Levitt Set Decoration Rosemary Odell Costume Design