Bela Lugosi

Armand Tesla

Nina Foch

Nicki Saunders

Roland Varno

John Ainsley

Matt Willis

Andreas Obry

Frieda Inescort

Lady Jane Ainsley

Miles Mander

Sir Frederick Fleet

Ottola Nesmith

Elsa Walter - Governess

Gilbert Emery

Dr. Walter Saunders

Leslie Denison

Detective Lynch

William Austin

Detective Gannett

Jeanne Bates

Miss Northcutt (uncredited)

Billy Bevan

Horace (uncredited)

Olaf Hytten

Ben (uncredited)