September, 1942. Karl Deichman knows that if he carries out orders to lead a precision bomb attack on the Royal Naval College in Dartmouth, he will probably kill his English cousin with whom, long ago, he swore friendship until death. But a pilot from the German Luftwaffe has no choice - the attack must proceed. After the war, and consumed by guilt, Karl returns to London on a quest to find out the fate of his cousin and uncover the secret of the Dartmouth conspiracy, but tension mounts as he is unwittingly drawn into a lethal trap. It isn't until Karl's final visit to Dartmouth in 2005 that the final jigsaw piece is slotted into place . . .