The Thirteenth Chair

Conrad Nagel

Richard Crosby

Leila Hyams

Helen 'Nellie' O'Neill

Margaret Wycherly

Madame Rosalie La Grange

Helene Millard

Mary Eastwood

Holmes Herbert

Sir Roscoe Crosby

Mary Forbes

Lady Alice Crosby

Lugosi Béla

Inspector Delzante

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Charles Quatermaine

Dr. Philip Mason

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Moon Carroll

Helen Trent

Cyril Chadwick

Brandon Trent

John Davidson

Edward 'Ned' Wales

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Bertram Johns

Howard Standish

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Gretchen Holland

Grace Standish

Frank Leigh

Professor Feringeea

Clarence Geldart

Commissioner Grimshaw

Lal Chand Mehra

Chotee