The time is 1943, London. Professor Alfred Vicary, a mild mannered academic, friend of Churchill, is drafted into M15 to help break the most horrifying intelligence case of World War II--the existence of a Nazi spy ring in England that is ferreting out the secret of the D-Day invasion. Vicary's "opponent" is Catherine Blake, a beautiful, perfect young Brit, a volunteer in the emergency wards during the Blitz, a heartbreaker--and deep German mole, a trained assassin and a determined killer. Their game of cat and mouse, with the success of the European invasion at stake--is the riveting saga of "The Unlikely Spy.