康拉德·纳格尔

Conrad Nagel

饰：Richard Crosby

丽拉·海厄姆斯

Leila Hyams

饰：Helen 'Nellie' O'Neill

玛格丽特·威彻利

Margaret Wycherly

饰：Madame Rosalie La Grange

Helene Millard

饰：Mary Eastwood

福尔摩斯·赫伯特

Holmes Herbert

饰：Sir Roscoe Crosby

玛丽·福布斯

Mary Forbes

饰：Lady Alice Crosby

贝拉·卢戈西

Bela Lugosi

饰：Inspector Delzante

约翰·戴维森

John Davidson

饰：Edward 'Ned' Wales

Charles Quatermaine

饰：Dr. Philip Mason (as Charles Quartermaine)

Moon Carroll

饰：Helen Trent

西里尔·查德威克

Cyril Chadwick

饰：Brandon Trent

Frank Leigh

饰：Professor Feringeea

Clarence Geldart

饰：Commissioner Grimshaw (as Clarence Geldert)

Lal Chand Mehra

饰：Chotee the Crosby Servant

乔尔·麦克雷

Joel McCrea

饰：(scenes deleted)

Bertram Johns

Bertram Johns

饰：Howard Standish

Gretchen Holland

Gretchen Holland

饰：Grace Standish