Dexter continues his manhunt for the Brain Surgeon as Debra makes a desperate plea to confess to LaGuerta's murder.
Dexter tracks down another potential serial killer from Dr Vogel's list, Quinn celebrates, and Deb is treated for her post-traumatic stress disorder.
It's been six months since LaGuerta's murder and Dexter is still managing life as a dad, brother and serial killer. Meanwhile, Miami Metro investigates the murder of a man who has had pieces of his brain removed.
Dexter faces impossible odds. A hurricane threatens Miami, Dexter becomes determined to do things his way.
Dexter is torn between leaving the country with Hannah and Harrison or taking Saxon out once and for all, and his indecision leads to grisly and unexpected consequences.