After the shock ending of the previous book, I felt obliged to plough on with the next to keep up the impetus. In which Peter leaves London for a routine check in association with the disappearance of two local girls and becomes drawn into the case because the local police are utterly at a loss and willing to let the weirdos from the magic squad have a go, which he does, and suddenly, unicorns are chasing him about the woods on a moonlit night.