It is early 1942 and following the Japanese attack on Pearl Harbour, the United States has joined the war. In response, Hitler launches his U-boat packs across the Atlantic against this fresh enemy and finds a country ill-prepared for the onslaught. With German submarines hunting at will along the eastern seaboard of America, the Battle of the Atlantic starts to swing back in favour of Germany. Lone Wolf plots the lives of those caught up on both sides. Vera Baldwin, leading her team of codebreakers at Britain’s Bletchley Park and struggling to pierce the fog of war to help guide those fighting the U-boats. Reinhard Ackermann, the veteran commander of U-127, as he takes his crew into uncharted waters. Leonard Cole and the crew of the escort ship HMS Protea , transferred to US command to help fight this new menace. Unknown to each other, their fates twist together towards a dramatic conclusion in the warm waters of the Caribbean. "Philip K. Allan deftly sets the board in a deadly three-way chess match. His storytelling shines as he takes readers aboard U127, to HMS Protea's bridge, and inside Bletchley Park's inner sanctum ... Lone Wolf surges with crisp prose and palpable page-turning tension." George D. Jepson in Quartdeck Magazine