Another great visit with the InCryptid family. Like the previous book, this is from the viewpoint of Mary, the ghost babysitter. Now that the evil crossroads entity is gone, she no longer has to answer to an employer, but can focus on the family. Until the anima mundi, which/who, with the crossroads gone, is kind of in charge of the world, taps her for a mission. Operatives from the Covenant of St. George are in the Northeast USA, and they are catching and torturing ghosts.
For help and travel companions, Mary gets Elsie and Arthur, half-Lilu (incubus/succubus) siblings. This was the most I've read about either of them - Arthur is actually a different person from the old Artie, since the time he kind of died and Sarah put him back together. Yeah, this is not a standalone book, though McGuire gives lots of catch-up to the people and the overall plot. Anyway, the three of them find the Covenant in Worcester, MA, find local cryptids and ghosts, and get to work on their mission.
Situations and decisions in the book may not always make sense, and some of the exposition is slightly awkward. But I still give it five stars because the characters are so great. McGuire is a genius at writing characters that you actually like (even if you can't fully comprehend them). I always want to know what's happening with everyone in the family, and she finds ways to include a lot of the ones who are not major players in the book, and updates on most of the rest. Several colonies of Aeslin mice figure into this story, and it's always fun to learn more about them.
At the end of the book, there's a bonus novella, Mourner's Waltz. This is a sweet, if sad, visit with Verity, who is in a depressed state, eight months pregnant and grieving the death of her husband Dominic. The story includes dragons (Verity is living in and managing a property for them), her chupacabra friend, and a nasty slime mold. Very nice.