This is the fifth of the DI Tony McLean series and it has an interesting set of storylines. Jo Dalgliesh has not seen her colleague, Ben Stevenson, a reporter for some time and reports him missing to Tony who reluctantly agrees to help. He is called out to the underground caves and passages beneath Edinburgh where there has been ritualistically killed dead body that has undergone gruesome purification acts. Oddly, there is absolutely no forensics. It is, of course, Ben Stevenson, and then more bodies turn up. Despite Tony's antagonism to Jo Dalgleish, who published a book on his fiancee, the two forge an unlikely alliance to investigate. We get glimpses into Tony's childhood with his grandmother which later turn out to have connections with the case. The transgender fortune teller, Madam Rose, is being harrassed and her beloved cat has been killed, and a lovely relationship develops between Tony and her. Developers, the McClymonts, pressure Tony to sell his burnt out flat to them. There is the requisite police conflicts. A great read. Many thanks to Penguin Michael Joseph for an ARC.