Wolf Hall by Hilary Mantel, Booker winner
Henry VIII's marital problems as seen through the eyes of Thomas Cromwell
Short sample – Thames boatman discussing Anne Boleyn's alleged incestuous affair with her brother: "that very night her brother's inside her, licking her up to the lungs, and then he's, excuse me sister, what shall I do with this big package – and she says, oh, don't distress yourself, my lord brother, shove it up the back entry, it'll come to no harm there."
Work of genius – my bet is it it will be on the A-level English Literature exam list before too long