Nostalgic recollections of wartime Britain often forget that when the blackout was enforced at night in an attempt to foil Nazi bombers a crime wave, cloaked by the inky black darkness, ensued on many of our streets. There were petty crimes, robberies, sexual assaults and, as The Blackout Murders reveals, some horrific murders took place on our home front during the Second World War. Some of them still rank among the most shocking crimes in...