The Wee Free Men - Terry Pratchett - Bog

EVERY LAND NEEDS ITS OWN WITCH. There's a monster in the river, a headless horsemen in the drive. And now Granny Aching has gone, there's only young Tiffany Aching left to guard the boundaries. It's her land. Her duty. But it's amazing how useful a horde of unruly pictsies can be . . .