A new Hilary Mantel book is an Event with a “capital “E.” Here’s why: The first two best-selling novels in Mantel’s planned trilogy about Thomas Cromwell, Wolf Hall and Bring Up the Bodies, each won the Man Booker Prize—that’s a first. The BBC is filming an adaptation of Wolf Hall for airing in 2015, and Mantel’s original short story, “The Assassination of Margaret Thatcher,” was printed in The Sunday New York Times Book Review a few weeks ago. That story is from Mantel’s new short story collection of the same name. Heads always tend to roll—figuratively and otherwise—in Mantel’s writing. Hers is a brusque and brutal world leavened with humor—humor that’s available in one shade only: black.