For once, the lone diver's treasure was priceless: a German U-boat, sunk in American waters three weeks after the end of the war. Inside: final proof that Reichsleiter Martin Bormann escaped from Hitler's bunker - with the Third Reich's hideous secrets intact. Among them: the names of British Nazi sympathisers - some of them pillars of the establishment - and the devastating document known as the Windsor Protocol. For the sake of national security, the U-boat must be destroyed. And no questions asked. Even if it means persuading Britain's most wanted IRA terrorist to take on the job..