When British scientist, Dr Fred Findhorn, is offered a king's ransom by a Japanese corporation to retrieve a briefcase from a Russian military aircraft that crashed fifty years ago, he's naturally intrigued. But finding the briefcase is the start of a deadly race against time as rival groups all stake their claims to its contents - the diary of Lev Petrosian, an East European wartime refugee who worked on the development of the hydrogen bomb. But Petrosian discovered something else - something that could change the course of human history, or put a very sudden end to it...