Suspect Zero is revealed to be a man who drives cross-country in a refrigerated truck. He targets children, whom he abducts and transports to his ranch, where he kills them. Mackelway links these crimes by recognizing that victims had signs of freezer burns while being transported. Mackelway chases one truck driver to a carnival, only to find that the child he saw in his vision as "captured" is free. O'Ryan suddenly appears and captures Mackelway. After refusing to be frightened, O'Ryan spares Mackelway. Eventually, the two men track Suspect Zero to his ranch and find numerous shallow graves. Chasing him, both vehicles crash off the road. Kulok manages to free a child while Mackelway kills Suspect Zero. O'Ryan then tries to convince Mackelway to end his suffering by killing him. When Mackelway refuses, O'Ryan pretends to attack him, prompting Kulok to shoot him to defend her partner.