Operation blackout

It is December 1940 and Hannah Conway is ten. She is evacuated to the countryside after a bomb leaves her completely alone in the world. Settling into her new life Hannah realises someone is following her. And when she and her new friends discover something in their sleepy village, they put themselves in even greater danger. Meanwhile in Germany, 12 year-old Konrad is faced with a proposition he cannot refuse. Will he risk everything to save his family?