The picture-postcard colleges of Cambridge shimmer beneath the sun of high summer. Beyond the city, the Fens lie quiet in the heat.
In an agricultural equipment showroom, the half-consumed body of a young man sticks out grotesquely from the mouth of a shredding machine.
Does this death mark the beginning of an unprecedented crime-wave in this quiet, well-heeled community? Or is it just the latest in a story of corruption and brutal violence stretching back more than twenty years?
For Detective Inspector Tom Fletcher, the secrets of the past are just as dangerous as the superbly trained killer that he faces in the present.