Richard Greene

Sir Ronald Burton / Richard Beckett

Boris Karloff

Dr. Meissen

Stephen McNally

Count Karl von Bruno

Rita Corday

Countess Elga von Bruno

Lon Chaney Jr.

Gargon

John Hoyt

Count Steiken

Michael Pate

Count Ernst von Melcher

Nancy Valentine

Therese von Wilk

Tudor Owen

Romley

Henry Corden

Fender

Otto Waldis

Innkeeper Krantz

Roy Engel

Burgher

Leslie Denison

Sir David Layton (uncredited)

Bernard Szold

Koppich (uncredited)

Jack Perrin

Hunter (uncredited)

Nathan Juran