THE DEVIL’S EDGE by STEPHEN BOOTH (2011, Little, Brown Book Group / Sphere, Paperback, 440pp) ∗∗∗∗∗ Blurb: A series of brutal home invasions is terrorizing the Peak District. Until now the burglars haven’t left a clue. This time they’ve left a corpse. But as the death toll rises, two intrepid cops begin to suspect…