Doctor Allan Barnes
Pam Albright
Miss Goodrich
Lieutenant Martin
Michael Radin
Doctor Soames
Professor Quincey
Anderson (as Bill Bryden)
Jim Moran
Mrs. Kelly
Lab Technician
Mime in Nightmare
Museum Guide (as Steven Appleby)
Acting
Self (in introduction added to video version) (uncredited)
Girl Who Is Killed (uncredited)
Demon of the Mask (uncredited)
