In World War Two a secret US military experiment caused a warship to vanish at sea - but has the tech now fallen into the wrong hands? Juan Cabrillo breaks into a Russian prison deep in the Siberian wastes to rescue his friend Yuri Borodin - the man who helped build the top-secret spy ship Oregon. But when the mission goes badly awry, Juan is left clutching the pieces of a disturbing puzzle: was Yuri arrested because he had discovered the horrifying secret behind the sinister designs of Russian admiral Pytor Kenin? Juan knows he owes it to his friend to find out. With his own private army and a weapon based on plans made by scientific genius Nikolai Tesla, Admiral Kenin is someone only a fool would cross. However, with the weapon about to start a war, Juan and the Oregon have no choice but to set course for trouble. 'Cussler is hard to beat.' Daily Mail 'The adventure king.' Sunday Express