"Taylor Anderson's enthralling New York Times bestselling series of alternate history continues as game-changing revelations upend the Grand Alliance in a potentially cataclysmic war. Ever since the USS Walker came from another world war to defy the terrifying Grik and diabolical Dominion, Matt Reddy and his crew have given their all to protect the oppressed Lemurians. But with the Walker in desperate need of repairs just as the Grik's First General...

In the last days of WWII, Germany, desperate for any last grasp to defeat the allied powers, looked to their last remaining weapons and soldiers. The German Navy and the last remaining U-Boats were formed together for one last mission, a mission to attack the United States Homeland, Operation Seawolf. Captain Hans Kessler, a grizzled submarine commander from both World Wars, is called into service to make one mission successful and help turn the tide...