I read this many years ago. Seeing it at the cottage when I had nothing to read (prior to the trip to the Simon's Town Library sale, obviously) I decided to reread it and, since I enjoyed the series, to abscond with it. Since I recognised it as being one of Dad's unwanted books that were variously placed at the cottage or used book stores (or my shelves), I felt that would be perfectly acceptable. Besides I don't think anyone else reads the books down there.
Anyway, this book features Edward X Delaney, who used to be a police chief and has a thing about sandwiches. The book made me hungry, with all its talk of food. Delaney is approached by an old friend who needs his help solving a series of apparently unrelated murders committed by one person. That would be Zoe Kohler, having adventures, which as far as I can tell involves dressing up like a hooker and murdering the men that pick her up. The police's attempts to find her are fascinating and really do show the value of painstaking, methodical work as opposed to the intuitive behaviour of Poirot (for example) - but that's at least partly the difference between having suspects and not having suspects.
Sanders writes well, though I don't enjoy all his work. This is one that I can recommend without reserve. It is both a police procedural, following the investigation through Delaney, who has the advantage of being able to step outside the strict lines of protocol, being retired. At the same time the book traces the journey of the killer and how the investigation impacts on her life and her kills.