Abattoir blues

When two boys vanish under mysterious circumstances, the local community is filled with unease. And when a caravan belonging to one of the youths is burned to the ground, and a bloodstain is discovered in a disused World War Two hangar nearby, things quickly become much more sinister. Assigned to the case, DCI Banks and his team are baffled by the mystery laid out before them. But when a motor accident throws up a gruesome discovery, the investigation spins into a higher gear - and in another direction.