Those of us who have already discovered Stephen Fry know him as the brilliant British comedian behind TV series such as Jeeves & Wooster and Blackadder, and the author of two enormously funny novels, The Liar and The Hippopotamus. But his new film (in which he plays Oscar Wilde) and his new novel (this one) represent a somewhat alarming departure from his previous work: They're more serious. Though humor is still an essential ingredient of both, Fry's...