Pratchett’s latest masterpiece chronicles a lad’s struggle to survive, and far harder struggle to make sense of the universe, after a tsunami wipes out his entire people. Along with the lives of everyone he has ever known, the devastating wave sweeps away Mau’s simple, happy soul—literally, he believes. Fortunately, though much of his angry quest to find something to replace his lost faith in the gods is internal and individual, he acquires company on his tropical island, in the form of the shipwrecked, repressed-but-not-for-long daughter of a high British government official and a ragged group of survivors from other islands who straggle in. This is no heavy-toned tale: Tears and rage there may be in plenty, but also a cast of marvelously wrought characters, humor that flies from mild to screamingly funny to out-and-out gross, incredible discoveries, profound insights into human nature and several subplots—one of which involves deeply religious cannibals. A searching exploration of good and evil, fate and free will, both as broad and as deep as anything this brilliant and, happily, prolific author has produced so far. (Fantasy. 11 & up)