A clergyman is murdered in his bed in the dead of night, triggering a chilling chain of events, each more bizarre and unnerving than the last – brutal killings, corpses vanishing, decomposed bodies digging their way out of graves. These shocking events seem unconnected but, at each scene, people report witnessing swarms of flies – hundreds, thousands, even millions of them. As DI Patel and DS Pardoe hunt for the mastermind behind these atrocious crimes, they are forced to ask: is this person human – or is all of this linked to the mysterious figure caught on CCTV, running at speed without moving its legs? And can they stop the swarm before they themselves are consumed?
