In the cutthroat world of crossword solvers, Jenna Hart will have to decipher some puzzling clues to catch a killer . . . The annual crossword puzzle contest has drawn contestants from near and far to Crystal Cove, and Jenna watches in amazement as puzzle-themed books fly off the shelves at the Cookbook Nook. Her aunt Vera is putting up a sizable cash prize, and no one is more surprised than Jenna to discover there's bad blood between...