Cast
Lewis Stone
Inspector Marney
Robert Coote
Stanby
Lal Chand Mehra
Professor Feringeea
Madge Evans
Helen "Nell" O'Neill
Thomas Beck
Dick Crosby
Henry Daniell
John Wales
Janet Beecher
Lady Alicia Crosby
Holmes Herbert
Governor Sir Roscoe Crosby
Elissa Landi
Helen Trent
Charles Trowbridge
Dr Mason
Heather Thatcher
Mary Eastwood
Matthew Boulton
Grimshaw (uncredited)
May Whitty
Mrs O'Neill aka Madame Rosalie la Grange
Ralph Forbes
Major Lionel Trent