What is the author's style in The Truth: A Novel of Discworld by Terry Pratchett?

An impersonal but thoroughly bemused and opinionated narrator tells the story of The Truth from the third-person point of view. This perspective is omniscient with frequent and extended runs of a lively and first-person dialogue interspersed in between. The narrator seems to be aware that the twenty-first-century earthbound reader has much to learn about flat and magical Discworld. However by the twenty-fifth novel in the series, there is little attempt at filling in secondary details. Many of the minor characters in this novel are quite prominent in earlier tomes, but little or not background is provided on them.