Dexter, still trying to recover his killer instincts, continues his pursuit of the mountain-sized gangster, Little Chino. Debra convinces herself she is past the trauma of her ordeal with the Ice Truck Killer, but loses control on the job.
As they both struggle with their recent pasts, Agent Lundy, a high-profile FBI agent, comes to Miami Metro PD to break the case of the city's newly discovered serial killer, the Bay Harbor Butcher.
original airdate--October 7,2007
music--Theme song--Dexter Main Title by Rolfe Kent