Coffee. It can get a girl killed.   * ABOUT THE BOOKS: * New York Times bestselling author Cleo Coyle launched her long-running Coffeehouse Mystery series in September 2003 with ON WHAT GROUNDS. It is now in its 20th printing from Penguin Random House. * Cleo’s books have received starred reviews, have been “Most Wanted” selections of The Mystery Guild, and Cleo …