This has to be one of the most unusual of P. D. James’s classic Dalgleish mysteries, and not only because Dalgleish isn’t the central character, but a kind of ghost at the feast. He is visiting his late aunt’s Norfolk coast windmill which he has recently inherited. Tasked with checking that the local serial killer is not the same as a London murderer (they aren’t), he is peripherally involved as an apparent final killing proves to be something more complex - but he isn’t the investigating detective at any time. As always with James, we get lots of background on many of the characters, with point of view flitting around between them, rather than staying with one or two individuals. The book also emphasises how much James was part of the Anglican tradition of mystery writers (along with, for example, the more modern examples of Richard Coles and James Runcie). It may not be as explicitly church-linked as Death in Holy Orders , but the title of the book taken from the Book of Common Praye...