A British commando team heads into France to blow up a German-held dam in preparation for D-Day, while a British agent infiltrates the German garrison to give inside help. The twist is that the British officer is replacing his twin … Richard Harrison, Klaus Kinski, Giacomo Rossi Stuart, Frank Braña, Pilar Velázquez, Helga Liné, Antonio Casas Added on Amazon Prime 2023-06-11.