Lionel Barrymore

Professor Zelin

Elizabeth Allan

Irena Borotyn

Lugosi Béla

Count Mora

Lionel Atwill

Inspector Neumann

Jean Hersholt

Baron Otto

Henry Wadsworth

Fedor Vincente

Donald Meek

Dr. Doskil

Jessie Ralph

Midwife

Ivan F. Simpson

Jan

Franklyn Ardell

Chauffeur

Leila Bennett

Maria

June Gittelson

Annie

Holmes Herbert

Sir Karell Borotyn

Michael Visaroff

Innkeeper

Egon Brecher

Coroner (uncredited)

Robert Greig

Fat Man (uncredited)

John George

Gypsy (uncredited)

Louise Emmons

Old Gypsy Woman (uncredited)

Eily Malyon

James Bradbury Jr.

Jane Mercer

Torben Meyer

Christian Rub