This 1953 French historical melodrama was the fourth film version of Pierre Benoit's novel Koenigsmark. Jean-Pierre Aumont stars as a court historian named Vignerte, who comes to the titular duchy to do research. Instead, Vignerte spends his time romancing the Duchess Aurora (Sylvana Pampanini), then saving her from the diabolical intrigues of her former husband, Duke Frederic (Roldano Lupi). Along the way, our hero discovers that the Duke is not a man to be trifled with, especially since he has a habit of walling up his enemies in the dungeon. Will the lovers escape, or will they meet a horrible doom? It takes 90 minutes to find out. ~ Hal Erickson, Rovi