Dexter continues to juggle life as a family man and serial killer; Miami Metro investigates a murder.
Miami Metro continues to hunt for the "Brain Surgeon"; Dr. Vogel seeks Dexter's help; Deb must take matters into her own hands.
Dexter continues to hunt for the "Brain Surgeon"; Dr. Vogel tries to convince Dexter he is perfect as a psychopath; Deb's PTSD kicks in.
Dexter tracks down another potential serial killer from Dr. Vogel's list; Quinn celebrates; Deb is treated for her PTSD.
Dr. Vogel comes into contact with the "Brain Surgeon"; Dexter and Deb try to keep the doctor safe; Masuka learns he has a daughter.
Dexter watches a young psychopath; someone from Dexter's past pays a visit.
Dexter takes on a protege and begins to teach him the code while finding out why Hannah is in Miami.
Dexter suspects his protege may have murdered an innocent person.
A murder hits Dexter close to home just as he decides to make a new life for himself with Hannah.
Dexter attempts to lure the Brain Surgeon into a trap; Dexter witnesses a murder.
Dexter is torn between leaving the country with Hannah and Harrison or taking Saxon out for good; Dexter's indecision leads to a grisly and unexpected consequence.