The Prisoner of Zenda

While vacationing in the Ruritarian kingdom, an Englishman discovers he is the exact double of his cousin, the heir about to be crowned king. When the monarch is drugged and kidnapped amid a plot against him, loyal supporters persuade the visitor to take his place at the coronation. As the search for the real king begins, the stand-in is drawn to Princess Flavia, the royal bride-to-be.