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