'Twas the night before Hogswatch and all through the house . . . something was missing. Specifically, a jolly fat man. It's the night before Hogswatch. And it's too quiet. Susan the governess has a tidy mind, but unfortunately it's a mind that won't stay tidy, because it keeps getting haunted. And now the Hogfather — Discworld's own jolly gift-giver — has gone missing, and it's up to her to find out why.