When Charlotte Sawyer discovers that her step-sister, Jocelyn, has vanished, she makes a desperate effort to find her. Charlotte joins forces with Max Cutler, a struggling PI who recently moved to Seattle. When her uneasy alliance with Max turns into a full-blown affair, Charlotte has no choice but to trust him with her life. After surviving a near-fatal attack, they turn to Jocelyn's closest friends for answers. But what they find is chilling…