Reparto
James Stephenson
Dr. Paul Venner
Geraldine Fitzgerald
Dr. Mary Murray
Donald Crisp
Dr. Drewett
Barbara O'Neil
Miss Leeming
Montagu Love
Dr. Blake
Sig Ruman
Professor Herman Von Reiter
G.P. Huntley
Dr. Thornton
Richard Ainley
Dr. Hale
Bruce Lester
Dr. Bentley
Leonard Mudie
Mr. Tom Foster
Doris Lloyd
Mrs. Foster
Frank Reicher
Dr. Esterhazy
