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