The popular image of the Home Front in the Second World War is of cheery Londoners, singing along to Vera Lynn on the radio and making do and mending while the bombs burst all around them. But there is another side to life in wartime Britain. Their Darkest Hour is a stimulating, unsentimental portrait of a nation at war telling the story - often disturbing, sometimes bilarious - of that other side: Fifth-columinsts, internment, the Black Market, racism, crime, class tensions and morality. Here, between two covers for the first time, is a side of the British at war that many would prefer to forget.