Reading through this short story collection by Aaronovitch, and this is the first really funny one - there's poltergeist-like activity in a bookshop, and Peter and Leslie have to stay the night there and sort it out. Why they just can't go after hours on a Sunday or anything when it's still light I don't know, but it's kind of like those stupid ghost shows on the telly where they hang around at midnight with torches, I guess, instead of getting a good look at a time of day when they can actually see things.

Peter and Leslie have electricity enough to do actual reading so it's not actually the same, but you get my drift. Anyway, I'll never not like a haunted bookshop story.