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 a robbery in 1991, is innocent. Despite having a full caseload, DI Wesley Peterson is forced to at least follow up on the claims. Mean...