Reparto
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 Geldart
John F.-X. Markham
Delmer Daves
Raymond Sperling
Nellie Bly Baker
Beedle
Marcia Mae Jones
Hungry Child in Park (uncredited)
Publicidad