World War II historian Nigel Graddon chronicles a number of mysterious U-Boat missions that took place both during and after the war. He details the strange landing of U-33 in Scotland in 1940, which involved the top-secret Enigma encoding device. He then looks at other special U-Boat missions involving the Third Reich - trips to Antarctica, curious cargoes of liquid mercury, the journey of the Spear of Destiny, the 'Black Subs' and more. Learn the extraordinary secrets of the Mystery U-Boats: - How the amazing story of U-33 and the Enigma device was kept secret for decades by the British military. - Mystery men and the U-Boats - Max Schiller, Rudolf Hess, Otto Rahn and others who played a role in the missions of the secret submarines. - Special missions to South America and Antarctica with mini-fleets of U-Boats. - The strange U-Boats with cargoes of liquid mercury. Where was this mercury headed and what was its ultimate purpose? - U-530, the Holy Lance and Hitler's secret 'Shrangri-La' in Antarctica. - Why was Scotland a centre for U-Boat activity? - Admiral Karl Donitz - Hitler's successor as Fuhrer - and the U-Boat fleets. Thoroughly documented with photographs and official records!