Honestly I feel like I read this story somewhere else before. I just didn't find it that interesting and the story had a ridiculous coincidence in order to make the whole thing work. I always liked the idea that Harry made sure that every murder victim had their day, or tried to give them their day. Everyone counts, or no one counts as this character liked to say. That said, this just felt like a weird segue into the world of Harry Bosch.
"Switchblade" has Harry working cold cases. A young boy was found murdered in LA and it looks like a man that is already in jail for murder may have been the perpetrator. Harry interviews the suspect and does what he can to get the DA to file charges. However, Harry puts a link together and realizes that there is another way to make sure the murdered young man is finally given justice.
I wonder if the story could have worked more if we had Harry bouncing ideas of of someone. Besides the perpetrator, we just have Harry also interacting with one of the women who works in the office and the DA. It just fell a bit flat in the end.