Every whisper built a picture of the threat to come - weapons that were terrifying in their murderous capabilities During the darkest days of the Second World War, the Allies listened intently to the messages of the enemy. Thousands of encoded messages were broken by Ultra, the code-breaking operation at Bletchley Park. These messages helped the Allies to make sense of the scrambled communications from the slave workers tasked with building Hitler's V-weapons, and the French, Danish and Polish agents who risked all to report on them. Target London is the dramatic tale of the inception of the German V-weapons, the Allies' epic race to discover the truth about them and the rockets' devastating effects on the streets of London. 'An accomplished study' Peter Conradi, The Sunday Times 'Detailed and well-researched . . . he has some fascinating material on London's response to this onslaught' Dominic Sandbrook, The Scotsman'Campbell has produced a comprehensive account of the V-weapon campaign . . . The writing is clear and the story compelling' Michael Sherborne, Mail on Sunday 'Campbell conveys these parallel narratives with suspense in a tale that contains numerous twists' Christopher Silvester, Express