Boris Starling - Messiah

London is in the grip of a heatwave: airless days, strange steamy nights and a killer stalking the streets. Wealthy men are being murdered to some mysterious pattern, with no clues left behind, only corpses with silver spoons in place of their tongues…
Set against this merciless butcher is DCI Red Metcalfe, an investigator with a celebrated ability to get under the skin and into the minds of the deranged killers he hunts. But as the city swelters and the body count rises, Red’s own tortured past begins to turn against him – and the city is safe for no one. Sometimes, it is said, it takes a killer to catch a killer…