'One of the most reliable thriller writers in the world' Daily MailGuernica, 1937When the bombers appear like a flock of birds over the horizon, Sibil Helinger, 17, is enjoying market day in the small Spanish town of Guernica. With no warning, clouds of German planes are upon them and bombs fall on the town like rain.Reeling with shock, Sibil spends the next few days frantically searching for her ...