I've read several books by this author and enjoyed most of them. This book features Detective Bosch who is now working in the open unsolved crime unit in Los Angeles. He is not the most charismatic man but, in this novel, he seems to have more personality than in previous novels. He's now close to the end of his career and he comes across as more "human" and flawed. In this novel, there were two main plots which are for the most part, independent from one another. One case is about the unsolved murder of a young girl dating back 20 years while the other is a live case which involves the son of Bosch's former chief with whom he had intense conflicts. It's really interesting to see how Bosch goes about both investigations and how he navigates the local political pressures -- so, it's like two novels for the price of one!! The pace is slow, the cases are not "shiny" and the level of action is mild (i.e., no silly car chases) and yet, the book kept me keenly interested and intrigued to the very end. I give it 4 out 5 stars (very good).