The Thirteenth Chair1929
October 19, 1929
Conrad Nagel
as Richard Crosby
Leila Hyams
as Helen 'Nellie' O'Neill
Margaret Wycherly
as Madame Rosalie La Grange
Helene Millard
as Mary Eastwood
Holmes Herbert
as Sir Roscoe Crosby
Mary Forbes
as Lady Alice Crosby
Bela Lugosi
as Inspector DelzanteCharles Quatermaine
as Dr. Philip MasonMoon Carroll
as Helen Trent
Cyril Chadwick
as Brandon Trent
John Davidson
as Edward 'Ned' WalesBertram Johns
as Howard StandishGretchen Holland
as Grace Standish
Frank Leigh
as Professor Feringeea
Clarence Geldart
as Commissioner Grimshaw