If you’ve followed my reviews of Ben Aaronovitch’s Rivers of London series of comic-mystery fantasies, you know that Detective Constable Peter Grant works for “the Folly,” a secret division of the London Metropolitan Police. The Folly’s brief is to deal with supernatural, magical crime. Peter is still learning his magical craft under Inspector Nightingale, an eccentric officer over a century old. The “Rivers” of the series title refer to several women who are in actuality the local goddesses of London’s various rivers, the daughters of “Mother Thames.”

In this installment, The Hanging Tree, a young socialite is found dead of a drug overdose in an upscale apartment building. The investigation turns up connections to certain members of Mother Thames’ family, and so the Folly is called in. Their inquiries uncover drug dealing among members of the semi-magical “demimonde,” and the trail leads to the Faceless Man, a magical supervillain Peter and Nightingale have been hunting for some time. It all culminates in a magical showdown in which a great deal of real estate gets trashed.

As always, the writing is excellent (although I’m annoyed by Peter’s narratorial tendency to use the construction, “me and x did so and so”), and the story combines excitement and wit.

However, I think this will be the last Rivers of London book for me. The series bears a resemblance to the revived Doctor Who TV series (for which author Aaronovitch has been a writer), including its ideological themes. Each book works more LGBTQ (etc.) characters in. I suppose the idea is to acclimate the reader to such things, in a frog-in-the-kettle manner. However (as you probably know), the frog in the kettle is an urban myth. Real frogs in real life stay until the water gets uncomfortable, and then jump out.

Which I’m doing now.