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