Plot: Based upon the novel "The Good Shepherd" by C S Forester, this is the thrilling story of an Allied convoy crossing the North Atlantic in 1942 as it faces relentless attack by a German submarine wolf pack. The leader of the convoy's destroyer screen is a US Navy commander making his first Atlantic crossing. The story focuses on his command responsibility as he fights the cold, the relentless night, the brutal sea, and his deep fatigue as he chases down the attacking submarines in the deadly game of cat and mouse. The exciting story, a thrilling ride-along with the beleaguered captain, so deeply portrays the elements of battle command that for a long period of time the book was used as a text at the US Naval Academy.