As I’ve said before, when Terry Pratchett is good, he can be very good, but he’s also capable of wide misses. This, a further adventure of Sam Vimes and the city guard, manages to be something in the middle. It has its moments and its share of characters, but it feels a bit half-hearted. On the other hand, there’s a nice tie-in available. You too can have your very own meta-version of Where’s My Cow?, the bed time story Sam reads to his son. It’s cute.