Notes
1941. At Bletchley Park, the race is on to crack the German Enigma code and thus prevent further naval and military losses. This endeavour hits close to home for Frederick Rowlands, blind veteran of the Great War, when his daughter is arrested on suspicion of betraying secrets to the enemy. Then a woman is found murdered, and Rowlands is drawn into a deadly battle of wits where he must decode a series of clues that will lead him to the killer and enable him to discover the real traitor at Bletchley Park.
