Most books about British traitors feature those who spied for Russia before and during the Cold War, making it easy to forget that we also spawned a few who worked for the Germans in the second world war. This book concerns four of them: John Amery, wastrel son of a Conservative cabinet minister; William Joyce, the Irish-American Nazi propagandist better known as Lord Haw-Haw; Harold Cole, soldier and petty criminal who sent 150 or more Resistance members to their deaths; and Eric Pleasants, a circus strong-man who disavowed national loyalties while donning German uniform.