Lewis D. Collins Director Brenda Joyce June Spenser Actor Don Porter Prof. Claude Ruppert Actor Patricia Morison Eve Ruppert Actor Milburn Stone Gerald King Actor Samuel S. Hinds Dean Albert Sears Actor Kathleen Howard Eddie Actor Griff Barnett Dr. George Carey Actor Ted Hecht Lane Actor Josef Mischel Screenwriter Morgan Cox Producer Maury Gertsman Cinematographer Russell F. Schoengarth Film Editing Harold H. MacArthur Art Director Jack Otterson Set Decoration Russell A. Gausman Set Decoration Leigh Smith Set Decoration Vera West Costume Design