This second book in the Sean Dillon series, sees Dillon switch sides from terrorist/assassin to hero. Opening with a prologue set around Hitler's bunker in the final days of WWII. With the Russian bombs landing ever closer, Hitler instructs his second in command, Martin Bormann, to leave the bunker, and take with him, a briefcase, and head to Argentina. Within the case is a blue book, listing both British and American sympathizers to the Nazi cause, and a document called 'The Windsor Protocol', stating that in the event of a German invasion of Britain, the abdicated Duke of Windsor would re-take the throne. Bormann never makes it, and the U-Boat that Bormann is travelling in, is fatally damaged during a storm.
Over 45 years later, Henry Baker, an amateur diver discovers the sub, and the damaging documents within. Unable to read German, Baker visits a friend of his in London,living long enough to pass the case onto his Kriegsmarine expert friend, Baker if killed in an accident before he can reveal the whereabouts of the U-Boat. The documents are brought to the attention of Brigadier Charles Ferguson, head of Group Four. Ferguson hatches a plan, hire Sean Dillon, who is awaiting an execution in a Yugoslavian prison, by offering him a complete pardon for his past crimes, and use his skills to find and destroy the U-Boat. The problem is, Ferguson and Dillon aren't the only ones looking for the U-Boat.
With Dillon now the hero of the series from this point on, Higgins inject some charm in the characterisation of Dillon. And thanks to Thunder Point, I now know more about The Duke of Windsor.