Ruth Roland as Cornelia Du Play

Roland Drew as Inspector Vernon

Doris Covert as Yvonne Balsac

Kenne Duncan as John Sommerset

Eugene Sigaloff as Schubin

Miriam Battista as Toinette - the Maid

Arthur Stenning as Det. Sgt. Williams

Alex Frazer as Louis Mentone - Butler

Julian Gray as Mr. Balsac - Yvonne's Father

George Temple as Ivanov

Frederick Dodds Slade as

Jerry Gowan as

Gerald Rowan as

Alex Michael as

Cecil Nichol as

M.R. Byatt as Minor Role (uncredited)