Lionel Barrymore

as Mathias

Caroline Frances Cooke

as Catharine

Gustav von Seyffertitz

as Jerome Frantz

Lorimer Johnston

as Hans

Boris Karloff

as The Mesmerist

Eddie Phillips

as Christian

Lola Todd

as Annette

E. Alyn Warren

as Baruch Koweski / Jethro Koweski

Laura La Varnie

as Fortune Teller

John George

as Mesmerist Announcer (uncredited)