Must love jazz. 
 Well, not really, but I could almost taste the love for jazz throughout this novel. Peter's dad was once a jazz legend, after all, and so it's not so hard to have his son pick up a bit of the love, if not the talent. This aspect of the novel was pretty nigh awesome. :) Flitting around the London Jazz scene, hunting down Jazz vampires... you know, those pesky varmints that nest in the musician's ear and suck out their brains and make them do really stupid things... 
 Or something like that. Maybe Jazz people are naturally messed up. But that doesn't mean that there aren't Jazz Vampires! 
 This second book in the series is spot on and very cool in the character department. There's less of the tropes and more of being a damn fine human being. The opening of the novel highlights this. I think I'd give it ten stars all by itself. Less guilt and more being a good friend. Hell yeah. :) 
 The rest of the novel runs like a jazz song... smooth, reoccurring riffs, and a baseline that, while not always steady, always came back into fine form. 
 That, and it's a great police procedural.. um... JAZZ POLICE... and magician-in-training novel. :) I continue to be very impressed. This is some of the very best detail-oriented and depth-of-character Urban Fantasies I've ever read, and I admit to having read a TON. 
 Totally recommend.