Dexter searches for the Brain Surgeon. Meanwhile, Dr. Vogel tries to prove to Dexter that he is perfect as a psychopath; and Debra makes a desperate plea when her post-traumatic stress disorder kicks in.
The eighth season begins six months following LaGuerta's murder. Debra works as a private investigator, with Batista replacing her as lieutenant. Meanwhile, Miami Metro investigates a murder in which the victim had pieces of his brain removed.