“An inventive plot and incisive character studies elevate MWA Grand Master Grafton’s twenty-fourth Kinsey Millhone novel...This superior outing will remind readers why this much-loved series will be missed as the end of the alphabet approaches.”—Publishers Weekly (starred review)X:  The number ten. An unknown quantity. A mistake. A cross. A kiss...Perhaps Sue Grafton’s darkest and most chilling novel, X features a remorseless serial killer who leaves no trace of his crimes. O