This is the tenth novel in Stephen Booth's series of Derbyshire crime novels, featuring DC Ben Cooper and DS Diane Fry. As with some of the other recent books in the series, Booth attempts to use a larger canvas than the cloying atmosphere of the Peak District that so defines the series. Here, it's managed much more successfully than in previous attempts; Cooper is left in Derbyshire, while Fry has to go back to her previous home territory of Birmingham to assist in the cold case rape enquiry in which she was the victim. This is a hard experience for her, but a fascinating one for the reader, as we get to know more of her background and meet her foster family. Needless to say, there are severe complications in the enquiry, and although Fry is notionally only involved as victim, she cannot help but use her professional background to get more deeply involved, straying into gangland territory and the Birmingham serious crime scene. Cooper, meanwhile, is tied up with the death of a small child, who he attempted to rescue from drowning. He is unconvinced that it was a straightforward accident and pursues the case with characteristic personal commitment, uncovering a complex web of family tensions. Towards the end, he begins to assist Fry in her unofficial investigation and there are some poignant questions about their future towards the end of the novel; the next entry in the series will be intriguing. This was well written, as always, with a gripping story line, complex characters and superbly contrasted settings. Highly recommended.