The year is 1955 and something is very wrong with the world. It is fourteen years since Churchill died and the Second World War ended. In occupied Europe, Britain fights a cold war against a nuclear-armed Nazi Germany. In Berlin the Gestapo is on the trail of a beautiful young resistance fighter, and the head of the SS is plotting to dispose of an ailing Adolf Hitler and restart the war against Britain and her empire. Meanwhile, in a secret bunker hidden deep beneath the German countryside, scientists are experimenting with a force far beyond their understanding. Into this arena steps a nameless British assassin, on the run from a sinister cabal within his own government, and planning a private war against the Nazis. And now the fate of the world rests on a single kill in the morning.