The third Tiffany Aching book in the Discworld series. It's been two years since the previous Tiffany Aching book. Tiffany has moved on to study under a new witch - this time Miss Treason, who is ancient (she claims to be 113 years old) and creepy as heck. Miss Treason takes Tiffany to see the Dark Morris, a tradition to welcome the winter. Tiffany, unfortunately, feels compelled to step in and join the dance, attracting the attention of the titular Wintersmith, the embodiment of Winter itself, in the process.