Commander Battle and the Atomic Sub #3 (1954)

In a tense naval showdown during World War II, the Allies face a terrifying new German submarine, the U-417, a seemingly unstoppable weapon that devastates Allied shipping. When all seems lost, a surprise counterattack unfolds as the American submarine Barracuda reveals its hidden form and pursues the U-417 in a high-stakes underwater chase.

Commander Bill Battle wakes to the weight of his duties as head of the Atomic Commandos and captain of the Atomic Sub, navigating a day filled with drills, public appearances, and an unexpected mission that leads him to infiltrate a suspicious, isolated building. There, he discovers a shocking conspiracy—spies have stolen America’s most guarded atomic secrets—and must use every trick in his arsenal to survive and send a desperate distress signal before time runs out.