Jimmy Stone died of a broken heart. Literally - someone put a sharp object between his ribs and pushed hard. He was found sitting in a circle with three other corpses, in the living room of a Notting Hill flat. Notting Hill - with its million-pound houses a hundred yards away from sink estates - is DCS Stella Mooney's patch, so it's up to her to discover who broke this heart of Stone's. But when Mooney's private life gets caught up in the quest to find Stone's murderer, what will it cost her - and those that she loves?