Secret of the Blue Room - Elenco
Lionel Atwill
Robert von Helldorf
Gloria Stuart
Irene von Helldorf
Paul Lukas
Captain Walter Brink
Edward Arnold
Commissioner Forster
Onslow Stevens
Frank Faber
William Janney
Thomas Brandt
Elizabeth Patterson
Mary, Cook
Robert Barrat
Paul, Butler
Muriel Kirkland
Betty, Maid
Russell Hopton
Max, Chauffeur
Anders Van Haden
The Stranger
James Durkin
Kruger, Commissioner's Assistant
Dick Rush