In Terry Pratchett’s sharp and witty Discworld novel, Commander Sam Vimes is sent on a diplomatic mission to the frozen nation of Überwald, where politics, ancient grudges, and the business of werewolves, dwarfs, and vampires all collide. As usual in Ankh-Morpork, duty, absurdity, and danger arrive hand in hand, in a story full of keen satire, fast-moving mystery, and Pratchett’s unmistakable comic imagination.