Cormoran Strike (what a perfect name for a PI) and his intrepid assistant Robin are targeted by a serial killer in this 3rd book in the CS series, which keep on improving. In addition to the serial killing, this book has some disturbing content about amputations. The Strike/Robin relationship is ever-complicated and a real treat to watch unfold.
Cuckoo’s Calling – Robert Galbraith (aka JK Rowling)
A classic contemporary murder mystery in the Mickey Spillane tradition: hard-boiled private investigator in London with a fabulous name – Cormoran Strike. He is an amputee from Army service, and is investigating an apparent suicide. Excellent context of London, usually Soho in the rain.