Cast 9
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 11
Jack E. Cox
Director of Photography
Robert Stevenson
Director
Sidney Gilliat
Screenplay
Michael Balcon
Producer
L. du Garde Peach
Screenplay
John L. Balderston
Screenplay
Alex Vetchinsky
Art Direction
Roy Ashton
Makeup Artist
R. E. Dearing
Editor
Hubert Bath
Original Music Composer
Alfred Roome
Editor