In October 2015, Peter Farquhar was found dead in his house in Maids Moreton, lying on the sofa next to a bottle of whisky. An inquest was made, and Peter's death was quickly ruled an accident. But after the death of another elderly neighbour, the dreadful truth began to emerge: both victims had been groomed, seduced and mentally tortured by a young man, Benjamin Field, who had used his position of power in the community to target and exploit the elderly.

He almost got away with it. Very little shocks criminologist David Wilson, but this extraordinary case in his sleepy hometown astounded him. Wilson felt duty-bound to follow its trail, discovering how his tightknit community failed to intervene, how a psychopath went undetected for years, and how Peter unwittingly supplied the blueprint for his own murder.