Review of "Rivers of London" by Ben Aaronovitch

It's not often I give up on a book, but this just isn't worth finishing. It's a bit like Harry Potter for...for grown-ups? Except that it's not all that grown up. There's a secret department of the Metropolitan Police that deals with magical matters, and our first-person narrator stumbles into when, as a beat policeman, he witnesses a horrible murder and then gets a tip-off from a ghost. It's not interesting, it's not well-written, I don't care about the characters...so enough. I notice that it's one of a series, which is depressing.