Tale of shopping: purchased in July of last year from "ThriftBooks - Blue Cloud" for a cool $5.98 (original price … much more than that). It turned out to be a rescue book from the Vineyard Haven Public Library. In good shape, those washashores are gentle readers. (Hey, for all I know, James Taylor might have read this very book before I did.)
Anyway: It's 2017 Connolly, which means I am only two years behind.
The plot threads in this book were also the basis for the most recent season of the Bosch series on Amazon Prime. There were some changes, most to adapt the details of the series' reality,
There are two major things going on: first, Harry Bosch is investigating the murder of father-and-son pharmacists in a tiny farmacia in the Hispanic section of San Fernando. It soon becomes apparent that the business was part of the oxycontin trade run by the mysterious "Santos". Harry goes undercover as a pill-popper to infiltrate the scheme that relies on fraud and coercion to funnel millions to the bad guys. Which puts him in major physical peril, I don't need to tell you.
Second, Harry gets the bad news that a thirty-year-old case where he put a murderer/rapist on death row is being re-opened. A deathbed confession from a different lowlife has been alleged. Reopening the evidence box seems to show exculpatory DNA on the victim's pajamas. And (worst of all) Harry is accused of planting a vital piece of physical evidence. If this conviction is overturned, Harry's reputation will be ruined, and it will cast Reasonable Doubt on the hundreds of bad guys he's put away since then.
The usual Connelly magic: the story hooks you and keeps those pages turning.
A bit of trivia: I said there were differences between the show and the book. Most are minor, as said, but there's one biggie on the show that might (as they say) Change Everything.