March 1943, the war hangs in the balance, and at Bletchley Park a brilliant young codebreaker is facing a double nightmare. The Germans have changed their U-boat Enigma code, threatening a massive Allied defeat. As suspicion grows that there may be a spy inside Bletchley, Jericho’s girlfriend suddenly disappears.

Author Robert Harris Published by Arrow Books ISBN 9780099527923 EAN 9780099527923 Bic Code Cover Paperback