In the dark, moonlit hours of May 10, 1944, the Pacific Ocean off the northwestern coast of Luzon was alive with danger. Beneath the gently rolling swells, the steel predator USS Cod (SS-224), a fleet submarine of the Gato-class, stalked its prey—a leviathan of a convoy moving southwesterly, heavily guarded by Japanese destroyers, torpedo boats, and patrol planes. What followed was a daring submerged engagement worthy of any tale from Theodore Roscoe’s annals of undersea valor: an audacious attack on a 30-ship convoy that left fire on the sea and silence below.