Italy 1943. The target, Enigma, the German's bafflinglyh complex enciphering machine. Its code was unbreakable until Ultra put the key to winning the war in Allied hands. The Plan, a devious double-cross to convince the Germans that their cipher is still secure. Making full use of powerful Vatican connections, it entails sending an agent into Nazi-occupied Rome, and making sure he is caught. The Agent, Roberto Rovere, a young Italian-American OSS agent. The Allies have cold-bloodedly plotted every detail of his capture and death except one, the Germans want him to escape, alive. ( )