Ghosts are starting to interact with passengers on the Tube, and Peter Grant (and the Folly) are called in on the case.
One complaint about this story – it’s too short. I absolutely want more of the main story line of this series, and this was not the novella to do that. That said, you get to met a baby river god, and Peter’s cousin Abigail’s studies in magic are coming along quite nicely, so it’ll be interesting to see where that goes. I just hope I get to see where that goes soon.