Ten years ago CSI Darby McCormick investigated a child abduction case. Today, Charlie Rizzo is back and holding his family hostage. He makes only one demand. Bring me Darby McCormick... When Darby arrives to defuse the scene, she finds him horrifically mutilated, with a mask of human skin sewn in place over his own face. Within minutes, a group of men disguised as SWAT officers bursts in and releases deadly gas, killing the Rizzo family and leaving Darby barely alive. Where has Charlie Rizzo been held all these years? Who are The Twelve who have been executing this gruesome torture? And why are the FBI running scared? Darby is facing the toughest case of her career...