 Having phoned Quinn, ordering him to come to the van's location, Liddy attempts to force a confession out of Dexter in order to regain his (Liddy's) reputation and status as a police officer.However, Dexter manages to fight back and in a short struggle, kills Liddy with his own knife in self-defense.When Quinn arrives at the van, he tries calling Liddy and shortly walks away, but not before a drop of Liddy's blood drops onto his shoe.