Basil Rathbone

Philo Vance

Leila Hyams

Belle Dillard

Roland Young

Sigurd 'Erik' Arnesson

Alec B. Francis

Professor Bertrand Dillard

George F. Marion

Adolph Drukker

Zelda Sears

Mrs. Otto Drukker

Bodil Rosing

Grete Menzel

Carroll Nye

John E. Sprigg

Charles Quatermaine

John Pardee (as Charles Quartermaine)

James Donlan

Ernest Heath

Sidney Bracey

Pyne (as Sydney Bracey)

Clarence Geldert

Clarence Geldart

John F.-X. Markham

Delmer Daves

Raymond Sperling

Nellie Bly Baker

Beedle

Marcia Mae Jones

Hungry Child in Park (uncredited)

Nick Grindé

Director

David Burton

Director

Lenore J. Coffee

Guión

S.S. Van Dine

Novela

Roy Overbaugh

Director de Fotografía

Roy F. Overbaugh

Director de Fotografía

William Axt

Compositor de la Música Original

Donald MacKenzie

Sound Director

Metro-Goldwyn-Mayer

Compañía de Produccion

Henrietta Frazer

Diseño de Vestuario

William LeVanway

Editor

Cedric Gibbons

Dirección Artística