Cast
Boris Karloff
Dr. Laurence
Anna Lee
Dr. Clare Wyatt
John Loder
Dick Haslewood
Frank Cellier
Lord Haslewood
Donald Calthrop
Clayton
Cecil Parker
Dr. Gratton
Lyn Harding
Prof. Holloway
Clive Morton
Journalist
D.J. Williams
Landlord
Crew
Costume & Make-Up
Roy Ashton
Makeup Artist
Directing
Robert Stevenson
Director
Production
Michael Balcon
Producer
