Basil Rathbone
Philo Vance
Acting
Leila Hyams
Belle Dillard
Acting
Roland Young
Sigurd 'Erik' Arnesson
Acting
Alec B. Francis
Professor Bertrand Dillard
Acting
George F. Marion
Adolph Drukker
Acting
Zelda Sears
Mrs. Otto Drukker
Writing
Bodil Rosing
Grete Menzel
Acting
Carroll Nye
John E. Sprigg
Acting
Charles Quatermaine
John Pardee (as Charles Quartermaine)
Acting
James Donlan
Ernest Heath
Acting
Sidney Bracey
Pyne (as Sydney Bracey)
Acting
Clarence Geldart
John F.-X. Markham
Acting
Delmer Daves
Raymond Sperling
Writing
Nellie Bly Baker
Beedle
Acting
Marcia Mae Jones
Hungry Child in Park (uncredited)
Acting