Director
Robert Stevenson
DIRECTOR
Writer
L. du Garde Peach
WRITER
Sidney Gilliat
John L. Balderston
Stars (in credits order)
Boris Karloff
Dr. Laurience
Anna Lee
Dr. Clare Wyatt
John Loder
Dick Haslewood
Frank Cellier
Lord Haslewood
Donald Calthrop
Clayton
Cecil Parker
Dr. Gratton
Lyn Harding
Prof. Holloway
Vincent Holman
Mr. Gray (uncredited)
Clive Morton
Journalist (uncredited)
Bryan Powley
Undetermined Role (uncredited)
Charles Rolfe
Police Constable (uncredited)
D.J. Williams
Landlord (uncredited)
