Book excerpt: This collection includes all four Tiffany Aching novels in Terry Pratchett's beloved and bestselling Discworld series. The Wee Free Men: Armed with only a frying pan and her common sense, young witch-to-be Tiffany Aching must defend her home against the monsters of Fairyland. Luckily she has some very unusual help: the local Nac Mac Feegle—aka the Wee Free Men—a clan of fierce, sheep-stealing, sword-wielding, six-inch-high blue men. Together they must face headless horsemen, ferocious grimhounds, terrifying dreams come true, and ultimately the sinister Queen of the Elves herself. . . . A Hat Full of Sky: Tiffany Aching is ready to begin her apprenticeship in magic. She expects spells and magic—not chores and ill-tempered nanny goats! Surely there must be more to witchcraft than this! What Tiffany doesn't know is that an insidious, disembodied creature is pursuing her. In the end, it will take all of Tiffany's inner strength to save herself ... if it can be done at all. Wintersmith: When the Spirit of Winter takes a fancy to Tiffany Aching, he wants her to stay in his gleaming, frozen world. Forever. It will take the young witch's skill and cunning, as well as help from the legendary Granny Weatherwax and the irrepressible Wee Free Men, to survive until Spring. Because if Tiffany doesn't make it to Spring—Spring won't come. I Shall Wear Midnight: As the witch of the Chalk, Tiffany Aching performs the distinctly unglamorous work of caring for the needy. But someone—or something—is inciting fear, generating dark thoughts and angry murmurs against witches. Tiffany must find the source of unrest and defeat the evil at its root. Aided by the tiny-but-tough Wee Free Men, Tiffany faces a dire challenge, for if she falls, the whole Chalk falls with her. . . .