A kingdom's ascending heir, marked for assassination, switches identities with a lookalike, who takes his place at the coronation. When the real king is kidnapped, his followers try to find him, while the stand-in falls in love with the king's intended bride, the beautiful Princess Flavia.
Rudolf Rassendyll / King Rudolf
Princess Flavia
Colonel Sapt
Grand Duke 'Black' Michael
Rupert of Hentzau
Antoinette de Mauban
Capt. Fritz von Tarlenheim
Marshal von Strakencz
Countess Helga
Assassin
Josef
Bersonin
De Gautet
Train Passenger Eating Banana (uncredited)
Rudolf's Brother Lord Burlesdon (uncredited)
Archbishop (uncredited)
Detchard (uncredited)