Den karaktären var Rankin och Dexter dödade honom av sorgsak. Det var inte som hans tidigare psykopatiska planerade dödande men en sociopatisk raseri.
Även hans Harrys hallucination berättar för honom att det är den första mänskliga saken han hade gjort sedan hans fru dödade.
Och han är inte den enda döden utanför Harry's kod, det finns många, från dexter.wikia.com :
Kills Outside The Code
Every season (after Season Two) saw Dexter kill at least one person that didn't meet Code, intentional or otherwise.
Season Three
Oscar Prado - Killed during a struggle at the home of a drug dealer. ("Our Father")
Nathan Marten - Pedophile, killed for taking photos of Astor. ("The Lion Sleeps Tonight")
Camilla Figg - Mercy kill, at her request. ("Easy as Pie")
Season Four
Jonathan Farrow - Killed in a 'kill room' and dumped him in the Gulf Stream. Dexter believed him to be a killer but it was actually his assistant. When Dexter found out that he was innocent, he deliberately broke Farrow's blood slide. ("Slack Tide")
Season Five
Rankin - Killed on the spot, out of anger. ("My Bad")
Stan Liddy - Killed in self defense, although Liddy may have killed somebody at some point since he was a former police officer. ("Hop a Freighter")Season Six
Norm - Killed when he demanded money from Dexter, although Dexter knew that the gun being held on him was not loaded. ("Nebraska")
Alberto - Killed for robbing Cuban immigrants and threatening them with a gun. ("This is the Way the World Ends")Season Seven
Clint McKay - The first and only innocent victim to receive a ritualistic kill (wrapped in plastic and dumped into the ocean). ("The Dark... Whatever")
Season Eight
Andrew Briggs - Killed during a struggle (which he caused). ("A Beautiful Day")