Bela Lugosi

as Armand Tesla

Nina Foch

as Nicki Saunders

Roland Varno

as John Ainsley

Matt Willis

as Andreas Obry

Frieda Inescort

as Lady Jane Ainsley

Miles Mander

as Sir Frederick Fleet

Ottola Nesmith

as Elsa Walter - Governess

Gilbert Emery

as Dr. Walter Saunders