Three people are kidnapped across California. Sophie is locked inside a derelict warehouse. Henry is abandoned in remote woodland. Elizabeth is trapped inside a sinking ship. They are alive, but don't have much time to live. Only one man can save them: unique investigator Colter Shaw. He's an expert tracker with a forensic mind, but this will be a test even for him. Because this killer isn't following the rules; he's changing them. One murder at a time