George Brent

Tim Hanley

Ilona Massey

Carla Nillson

Basil Rathbone

Reggie Oliver

Gene Lockhart

Sidney Grenner

George Zucco

Webster

Francis Pierlot

Dr. Rowan

Martin Kosleck

Brunner

Charles D. Brown

Tetlow

Marjorie Gateson

Mrs. Grenner

Leyland Hodgson

Moulton

Clayton Moore

Sewell

Gordon De Main

Denby

Frederick Worlock

Sir Henry

Bobby Barber

Taxi Driver

Trevor Bardette

Krell, the Chemist

Lynton Brent

Agent

Ralph Brooks

Party Guest

Frances Carson

Undetermined Secondary Role