Nathan Juran Director Craig Stevens Col. Joe Parkman Actor William Hopper Dr. Ned Jackson Actor Alix Talton Marge Blaine Actor Donald Randolph Gen. Mark Ford Actor Pat Conway Sgt. Pete Allen Actor Florenz Ames Prof. Anton Gunther Actor Paul Smith Corporal Actor Phil Harvey Lou Actor Paul Campbell Lt. Fred Pizar Actor Jack Mather Officer Actor George Lynn Mutual Transportation Bus Driver Actor Edward McNally Policeman Actor Martin Berkeley Screenwriter William Alland Producer Ellis W. Carter Cinematographer Chester W. Schaeffer Film Editing Robert Clatworthy Art Director Alexander Golitzen Art Director Oliver Emert Set Decoration Russell A. Gausman Set Decoration Jay A. Morley Jr. Costume Design