On the brink of defeat, Hitler commissioned 10,000 V2s - ballistic rockets that carried a one-ton warhead at three times the speed of sound, which he believed would win the war. In November 1944, Dr Rudi Graf finds himself in a bleak seaside town in Occupied Holland, launching V2s against London. The no. 1 bestselling author of "The Second Sleep" returns to World War II for his new thriller.