Chyna Shepherd, a young woman, finds herself trapped in a living nightmare when she witnesses a brutal murder inside a remote country house. As the monstrous killer, Edgler Vess, sets out on a cross-country rampage, Chyna must make a terrifying choice: escape or stay and confront the psychopath to save a captive girl. This relentless psychological thriller by Dean Koontz explores the depths of human courage, the nature of pure evil, and the desperate fight for survival against an unstoppable force. A truly intense and gripping read.