Anna Cabbot is a ditchwitch. She is also a necromancer, though she doesn't remember a whole lot about when Death came calling in cardiac ICU. She's not sure if that's better or worse than what it could be. Here's what she is relatively sure of: the Nigel, the embodiment of the Niagara River, is missing. His sister -- the Lady of Lake Erie -- has strong-armed Anna into doing the bulk of the investigative work. Except Anna isn't a detective, and the only place she's got to start is a person called the Bookkeeper. Jamie Murdock is an otherwise ordinary witch, and certainly an ordinary man. He takes Anna for pierogis as a semi-first date, works a couple of jobs, and is probably the best romantic partner to walk into her life -- if she's brave enough to open her patched-up heart and let him stay. While Anna tries to sort out her life -- love and otherwise -- the longer Nigel stays missing, the more a power vacuum opens in the city, and the more tenuously the magical Community's ability to hide in plain sight becomes. But the kind of magic capable of stealing a river is the kind of magic Anna isn't sure she can come up against and win. And if she can, the cost might be more than she's willing to pay.