When a letter arrives at Tradmouth police station addressed to a DCI Norbert it causes quite a stir For though DCI Norbert has long since moved on the letter claims to have evidence that the man convicted of murdering the Rev Shipbourne Vicar of Belsham during the course of a robbery in 1991 is innocent Despite having a full case load including investigating a series of vicious attacks on a local supermarket chain DI Wesley Peterson is forced to at least follow up on the letter writer's claims Meanwhile archaelologist Neil Watson is excavating as site in Pest Field near Belsham church He discovers a mass grave that leads him to conclude that the site
- earmarked for development
- is one of an ancient medieval plague pit But more disturbing is the discovery that the grave is home to a more recent resident