The Mad Doctor

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)

Edith Head

Costume Design

Gordon Jennings

Special Effects

Hans Dreier

Art Direction

Tim Whelan

Director

Archie Marshek

Editor

Victor Young

Original Music Composer

Robert Usher

Art Direction

George M. Arthur

Producer

Ted Tetzlaff

Director of Photography

Howard J. Green

Screenplay