Sir Terry at his best! One of my favorite books in the Watch series, by this point Vimes and Co have grown into a multi-dimensional cast of crime-fighters, ready to deal with wayward clues and seriously Prod Buttock. Which is good, because two harmless old men are dead, someone is trying to kill the Patrician, and something abominable stalks the night. The action is paired with some of the best Discworld philosophizing on power, politics, and the conflicting desires between the Void of Freedom, and the Cage of Sovereignty.