Philo Vance
Belle Dillard
Sigurd 'Erik' Arnesson
Professor Bertrand Dillard
Adolph Drukker
Mrs. Otto Drukker
Grete Menzel
John E. Sprigg
John Pardee (as Charles Quartermaine)
Ernest Heath
Pyne (as Sydney Bracey)
John F.-X. Markham
Raymond Sperling
Beedle
Hungry Child in Park (uncredited)
