A dying city. A frozen sea. A secret that could poison the future.
January 1945. The Third Reich is collapsing. The Red Army has encircled the fortress city of Königsberg, trapping hundreds of thousands of civilians and soldiers in a pocket of hell. But amidst the shelling and the starvation, a shadow war is taking place beneath the burning streets.
Lieutenant Colonel Mac McAllister and his OSS team insert into the frozen nightmare of East Prussia with a dual locate the looted treasures of the Amber Room before they vanish into the Soviet Union, and intercept a mysterious lead-lined "Package" salvaged from a Balkan train wreck.
Forced to navigate a landscape of ice and blood, Mac must forge an uneasy alliance with a cynical German intelligence officer and traverse the refugee-choked "Ice Bridge" of the Curonian Lagoon. But the real enemy isn't the Wehrmacht—it's Colonel Volkov. The Soviet spymaster is stripping the city of its secrets, preparing to defect with a biological weapon dormant since the Viking age.
From the steam tunnels of the Teutonic Castle to the deck of an icebreaker on the storm-tossed Baltic, Mac, Elara, and Kowalski must stop Volkov from turning the end of the war into the beginning of a plague.