Erich von Stroheim as Count Wladislaw Sergius Karamzin

Rudolph Christians as Andrew J. Hughes

Miss DuPont as Helen Hughes

Maude George as Princess Olga Petchnikoff

Mae Busch as Princess Vera Petchnikoff

Dale Fuller as Maruschka

Cesare Gravina as Cesare Ventucci

Malvina Polo as Marietta

Albert Edmondson as Pavel Pavlich

Mary Philbin as Crippled Girl (uncredited)

Nigel De Brulier as Monk (uncredited)

C.J. Allen as Albert I

Robert Edeson as Andrew J. Hughes

Agnes Emerson as Bit Role

Louise Emmons as Mother Garoupe

Harrison Ford as Armless Soldier

Mrs. Kent as Dr. Judd's Wife

Edward Reinach as Secretary of State of Monaco

Louis K. Webb as Dr. Judd