Dixon is suggested as a prime suspect in the murders. But, with LaCrosse on his trail, Goodall reveals himself as the killer. At a mechanics' shop where his car has been repaired, he kills again, drawing a knife on the mechanic, actually an old friend and former co-worker, because he spots a state trooper checking out the white Cadillac. Unseen by Dixon, he kills his friend to silence the potential witness who could link him to the car. As Goodall and Dixon ride on, building a friendly rapport, Goodall tells the hitchhiker about his son. He asks Dixon to look after the boy if anything happens to him. Dixon agrees, and Goodall gives him the boy's address. The authorities discover the driver of the white Cadillac at the last murder scene fits Dixon's description. Nobody mentions Goodall. Police roadblocks ignore mountain roads which are nearly impassable after a blizzard.