Of the #1 New York Times–bestselling Sue Grafton, NPR's Maureen Corrigan said, she “makes me wish there were more than twenty-six letters.” X—the shortest entry in the English-language dictionary. X—notoriously slippery to pronounce.X—from Greek and Latin and commonly found in science, medicine, and religion.X—the twenty-fourth and trickiest letter in the English language. X—what can it be for? Come fall, readers everywhere will find out as Kinsey Millhone makes her much-anticipated appearance in Sue Grafton's thrilling new novel. X—only two letters left.