The Dark Hours by Michael Connelly

It's New Year's Eve and LAPD detective Renee Ballard has two cases she's working on. Reformed gang member Javier Raffa was murdered during the celebrations and Renee is also trying to catch a duo of serial rapists that she has nicknamed "The Midnight Men." While doing legwork on Raffa's death, she comes across a connection to a case that her friend, Harry Bosch, was part of when he was with the LAPD. As a result, Bosch again assists Ballard, as he has in the past. In The Dark Hours, author Connelly writes another unputdownable book. Connelly again proves that he's a master of the mystery genre. It will published next month.