 Doakes had killer impulses which drove him to divorce his wife, confessing that if he had stayed with her any longer, he would have killed her.Doakes instinctively hates Dexter; and is the only person in Dexter's life who can see through his mask of normalcy, Doakes suspects that Dexter is hiding something and has no reservations about telling him so.Ultimately, Doakes realizes that Dexter is withholding vital information on the Ice Truck Killer case and his frustration drives Doakes to physically attack him, only for Dexter to expertly fight back.