Of New York Timesndashbestselling author Sue Grafton NPRrsquos Maureen Corrigan said ldquoMakes me wish there were more than lettersrdquo With only two letters left Graftonrsquos many devoted readers will share that sentimentX The number ten An unknown quantity A mistake A cross A kissX The shortest entry in Websterrsquos Unabridged Derived from Greek and Latin and commonly found in science medicine and religion The most graphically dramatic letter Notoriously tricky to pronounce think xylophoneX The twenty-fourth letter in the English alphabetSue Graftonrsquos X Perhaps her darkest and most chilling novel it features a remorseless serial killer who leaves no trace of his crimes Once again breaking the rules and establishing new paths Grafton wastes little time identifying this sociopath The test is whether Kinsey can prove her case against him before she becomes his next victim.