A new OSS adventure finds the agents of Wild Bill Donovan fighting the Battle of the Atlantic on two fronts, a situation that is compromised by a possible saboteur.

Tapped by FDR to assist the Allies' efforts to secure France and build an atomic bomb, OSS spy chief Wild Bill Donovan and top agent Dick Canidy coordinate a sabotage mission in Germany while countering a mole who is leaking Manhattan Project secrets to the Soviets.