Frank Fay as Leopold Trebel/Adolphe Noblet

James Gleason as Gustave Corton

Lilyan Tashman as Sylvaine

Beryl Mercer as Corinne

Florence Eldridge as Juliet Corton

Vivien Oakland as Susan Trebel

Arthur Edmund Carewe as Dr. Fried (credits) / Dr. Beaudine (in film)

Marion Byron as Marrieanne

Flora Finch as Vosin

James Bradbury Sr. as August Charbonnier

Dickie Moore as Trebel's Son (uncredited)