Cast
Conrad Nagel
Richard Crosby
Leila Hyams
Helen 'Nellie' O'Neill
Helene Millard
Mary Eastwood
Holmes Herbert
Sir Roscoe Crosby
Bela Lugosi
Inspector Delzante
Frank Leigh
Professor Feringeea
Cyril Chadwick
Brandon Trent
John Davidson
Edward 'Ned' Wales
Margaret Wycherly
Madame Rosalie La Grange
Mary Forbes
Lady Alice Crosby
Clarence Geldart
Commissioner Grimshaw
Lal Chand Mehra
Chotee