Season 8 premiere. Six months after LaGuerta's death, Dexter is still managing life as a dad, brother and serial killer. Meanwhile, Miami Metro investigates the murder of a man who's had pieces of his brain removed.
Miami Metro continues their hunt for the Brain Surgeon, while Dr. Vogel enlists Dexter's help. While on a case, Debra has to take matters into her own hands.
Dexter continues his manhunt for the Brain Surgeon. Dr. Vogel tries to prove to Dexter that he's perfect as a psychopath. Debra's PTSD kicks in and she makes a desperate plea.
Dexter tracks down another potential serial killer from Dr. Vogel's list. Quinn celebrates passing the sergeant's exam by defending Debra's honor in a fight. Dr. Vogel begins treating Debra for her PTSD.
Dexter monitors a young psychopath to see if he meets the criteria of the code. Dexter and Debra finally get back to normal, but are surprised when someone from Dexter's past pays them a visit.
Dexter is torn between fleeing the country with Hannah and Harrison or taking Saxon out for good. Dexter's inaction results in a grisly and unexpected consequence.