Mystery writer Martha Grimes continues to outline the plot of her new book THE BLACK CAT, in bookstores nationwide on April 6, 2010. Superintendent Richard Jury of Scotland Yard must match wits with his nemesis Harry Johnson, the psychopath from THE OLD WINE SHADES and DUST, trying to figure out how the black cat from the eponymous pub in Chesham is in Harry JohnsonâÂÂs backyard in London.