Okay, so.
Last book, despite its flaws, actually had one of the more coherent and workable plots I’ve seen. This book is the usual disaster, only worse because it’s a detective story so you’re supposed to have some clue what’s going on before the end.
Let’s just consider the central conceit (okay, first let’s pretend the central conceit isn’t “haha i got to call a woman a swear word! it’s a pun lol.”), which is that there’s werewolf killings but when Harry tries to investigate it there ends up being a giant pileup of all the different types of werewolf by amazing coincidence.
This actually could work if we give a connection between them.