The Last Temptation of Sidney Chambers

Whisky-drinking, cigarette-smoking, and jazz-loving Anglican priest Sidney Chambers is a self-admitted sinner and knows he has a lot to atone for. Heartbroken and disillusioned, he has imposed a strict social moratorium on himself for the winterand confined himself to his office, conferring with no one but his housekeeper Mrs. Chapman and his housemate, curate Leonard Finch. Besides drinking, he'd been indulging himself in detective novels written by an "S.L. Cooper." When Geordie Keating comes to the vicarage to ask for his help, Sidney is reluctant to help him and Geordie accuses him of not wanting to get his hands "dirty" anymore.

Meanwhile, a mysterious woman moves into the manor at the edge of the wood and becomes involved in a series of murders that strikes Grantchester. Sidney soon realizes that the murderer patterns the killings after the grisly scenes from the books he's been reading and his enigmatic new neighbor may have the answer.
Desperate for help, Sidney turns to Geordie again and the two of them must work together once more, even if the person that Sidney could no longer trust is... himself.