Wait, hang on a second. [Looks up how many PC Peter Grant novels there are so far.] [Discovers Ben Aaronovitch wrote a few serials for “Doctor Who,” in the late Eighties. Light bulb.] [Discovers that although the book jackets say “PC Peter Grant Series,” whoever edited Wikipedia last prefers to refer to them as the “Rivers of London Series.” Huh, makes sense. Also: spoilerish.] [Discovers there are 6 “Rivers of London” novels so far, and what’s this, now? 9 spin-off graphic novels? And 4 companion […]