Action-packed World War I thriller starring Michael York as a young man who is contracted by Britain to uncover confidential German plans involving a new zeppelin. He gets more than he bargained for when he goes on a test flight aboard the ship and discovers that the Germans plan to steal the Magna Carta. Elke Sommer and Anton Diffring also star. 102 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.