Spoilers for the earlier volumes ahead.
Like Digger's being all tearful after the end of volume 5 -- but since hard work is the best cure, on with the quest. A stair that is not a short cut but does have its advantages. An arm is reset, and a burning but inexplicable sense of urgency set in. A warning from a shrew/troll, hiding in the temple, a noble stand to prevent people from passing, a desperate quest to act in an hour, a crowbar, making a racket at a dangerous time, discussions of purple ink. . . .
It comes to a grand climax, and an elegant denouement.