Basil Rathbone

Dr. George Sebastian / Dr. Langamann

Ellen Drew

Linda Booth

John Howard

Gil Sawyer

Barbara Jo Allen

Louise Watkins (as Barbara Allen [Vera Vague])

Ralph Morgan

Dr. Charles Downer

Martin Kosleck

Maurice Gretz

Kitty Kelly

Winnie

Hugh O'Connell

Lawrence Watkins

Henry Victor

Furber (Uncredited)

Wanda McKay

Girl at Charity Bazaar (Uncredited)

James Seay

Intern (Uncredited)

William Benedict

Mickey Barnes (Uncredited)

George Chandler

Elevator Operator (Uncredited)

Edward Earle

Librarian (Uncredited)

Chuck Hamilton

Police Officer at Train Station (Uncredited)

Harry Hayden

Ticket Clerk (Uncredited)

Douglas Kennedy

Hotel Clerk (Uncredited)

John Laing

Intern (Uncredited)

Charles McAvoy

Officer Riley (Uncredited)

Howard M. Mitchell

Butler (Uncredited)

Ruth Rogers

Woman at Charity Bazaar (Uncredited)

Sheila Ryan

Hostess at Charity Bazaar (Uncredited)

Hugh Sothern

Dr. Hatch (Uncredited)

Max Wagner

Cab Driver (Uncredited)

Tim Whelan

Director

Howard J. Green

Screenplay

George M. Arthur

Producer

Victor Young

Original Music Composer

Ted Tetzlaff

Director of Photography

Archie Marshek

Editor

Hans Dreier

Art Direction

Robert Usher

Art Direction

Edith Head

Costume Design

Gordon Jennings

Special Effects

Adolph Zukor

Presenter

Joseph C. Youngerman

Assistant Director

A. E. Freudeman

Interior Designer

John Cope

Sound Recordist

Harry D. Mills

Sound Recordist

Farciot Edouart

Visual Effects

Stephan Pasternacki

Additional Music