It's wartime Britain, and Stephen's friend Keith makes the momentous announcement that his mother is a German spy. Determined to find the truth, the two boys begin to spy on the 'spy'. The boys discover that Keith's mother does have secrets to hide, but they are not the ones they had suspected. Ideal for critical analysis of a substantial piece of prose; vocabulary, narrative technique, rhetorical devices and moral depth. Whitbread / Costa Book Award winning title.