Lugosi Béla

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)

Sam White

Producer

Randall Faye

Additional Dialogue

Lew Landers

Director

Kurt Neumann

Story

Griffin Jay

Writer

L. William O'Connell

Director of Photography

Mario Castelnuovo-Tedesco

Original Music Composer

Paul Borofsky

Editor

John Stumar

Director of Photography