After witnessing her brother kill Travis Marshall, Debra attempts to reconcile with Dexter while struggling to cover up their involvement with the murder.
Meanwhile, Detective Mike Anderson has an unfortunate run-in, Quinn and Batista begin to make amends, and LaGuerta finds evidence that causes her to re-think the closed Bay Harbor Butcher case.
original airdate--September 30,2012 rating--2.4 million*
songs--Theme song--Dexter Main Title by Rolfe Kent
*2.4 million for the 9 p.m. airing and 3.04 million for the 11 p.m. airing both a record for Dexter premiere.Up 10% over last year's opener.
Goofs : When the forensics team are at the place where Mike was killed, Dexter takes out his iphone and used its touchscreen to scan for fingerprints of the corpse in the car trunk. A touchscreen cannot scan for fingerprints because it doesn't work that way.