New work by a young writer who's both greatly gifted and prolific often points readers' minds toward the future. You finish the book and immediately begin speculating about works to come—achievements down the road that will cross the borders defined by the work at hand. Anne Tyler's books have been having this effect on me for nearly a decade. Repeatedly they've been brilliant—"wickedly good," as John Updike recently described one of them. "Dinner at the Homesick Restaurant" is Anne Tyler's ninth novel; her career began in 1964 with a fully realized first novel (the title was "If Morning Ever Comes," and there are piquant links between it and her latest book); everything I've read of hers since then—stories, novels and criticism (Anne Tyler is a first-rate critic, shrewd and self-effacing)—has been, at a minimum, interesting and well made. But in recent years her narratives have...