Roger Corman Director, Producer Ray Milland Guy Carrell Actor Hazel Court Emily Gault Actor Richard Ney Miles Archer Actor Heather Angel Kate Carrell Actor Alan Napier Dr. Gideon Gault Actor John Dierkes Sweeney Actor Dick Miller Mole Actor Brendan Dillon Minister Actor Clive Halliday Judson Actor Charles Beaumont Screenwriter Ray Russell Screenwriter Gene Corman Executive Producer Floyd Crosby Cinematographer Ronald Sinclair Film Editing Ronald Stein Original Music Daniel Haller Art Director Marjorie Corso Costume Design