Publisher's Synopsis
31st December 1942. In the middle of the North Atlantic, the deadly 'gap' where aircraft cannot protect them, a destroyer and four corvettes are shepherding a convoy of merchant ships from America to Britain. They are bringing the crucial supplies that are keeping wartime Britain alive, but as midnight passes, the New Year is marked by a white flash on the starboard horizon - a bolt of light that can only mean one thing. A German torpedo.