Bill Walker
Lieutenant Martin
Paul Nevens
Demon of the Mask (uncredited)
Claudette Nevins
Pam Albright
Martin Lavut
Michael Radin
Paul Stevens
Doctor Allan Barnes
Anne Collings
Miss Goodrich
Eleanor Beecroft
Mrs. Kelly
Norman Ettlinger
Professor Quincey
W.B. Brydon
Anderson (as Bill Bryden)
Rudi Linschoten
Mime in Nightmare
Stephen Ker Appleby
Museum Guide (as Steven Appleby)
Harry Blackstone
Self (in introduction added to video version) (uncredited)
Nancy Island
Girl Who Is Killed (uncredited)