Boris Karloff

Dr. Victor Sartorius

Joan Wyndham

Eve Rowe

Arthur Margetson

Roger Clifford

Mona Goya

Yvonne Clifford

Anthony Ireland

Capt. Arthur Halliday

Morton Selten

Sir Charles Clifford

Nina Boucicault

Mary Clifford

Gibb McLaughlin

Jacques

J.H. Roberts

Chalmers

Victor Rietti

Doctor Bousquet

Wilfrid Caithness

Morrocan Official

Henry Edwards