A 312-foot Gato-class submarine navigated an uncharted enemy harbor using a page torn from a cheap geography atlas a crewman bought in Australia. This episode follows the USS Wahoo from her cautious, frustrating first two patrols under Marvin Kennedy, where targets like a carrier and an unescorted midget-sub tender slipped away, to the arrival of Dudley Mush Morton, who told the crew the boat was expendable and gave anyone who wanted out 30 minutes to leave. No one did.

We cover the Wewak harbor attack and the point-blank torpedo that broke the destroyer Harusame's back, the deeply contested Buyo Maru incident and the discovery that many of those in the water were Indian prisoners of war, the record-breaking patrols in the shallow Yellow Sea where the crew fought with deck guns and Marine-donated Molotov cocktails, and the Mark 14 torpedo f ...