A body was killed with same m.o. as last week's death. "We got a serial," says Batista. Quinn coins the name of the Big Bad this season: "The Brain Surgeon." Pretty good.
Dexter finds a partial print, and he tells Vogel that they might have a head start on catching the killer who's stalking her. He asks why his dad came to her in the first place. Her answer does not say that Harry and Vogel were sleeping together, but we're all wondering it. And now Dex and Vogel are starting to have some odd chemistry too.
"You don't trust me," Vogel says.
"Which you should have expected, since you know me so well," he counters.
Oh you two, just kiss already!
Dex gets a name on the print, and goes to the presumed killer's apartment. He briefly considers his former trophy hiding place -- the AC unit -- nah. He finds a photo of hunting cabin, a clue to his location. At the cabin he finds the killer already dead. He's hung on a meat hook, so ... not a suicide. This case just got more complicated.
Vogel tells Dex her theory on psychopaths, and it's an interesting one. She says "psychopaths are a gift of nature, not a mistake" and calls them "alpha wolves" who "help the human race survive long enough to become civilized" and that "without psychopaths, mankind would not exist today."
What do you think of this theory? Not sure I agree. Because psychopaths are arguably only necessary if you're fighting off other psychopaths. The cold brutality that's arguably required in wartime decision-making is only needed if there's a brutal aggressor trying to kill and conquer int he first place.
Meannwhile, Deb goes to Briggs' storage unit. After a brief rummage, she finds the jewels.
Suddenly El Sapo is there -- The Toad grabs her gun and takes the jewels from her. The old Deb would have been angry, but just trying to survive the encounter. This new self-destructive Deb rushes him. He beats the crap out her in a wince-inducing and effective fight scene (the episode was directed by Michael C. Hall).
"Stay down!" he orders. "You're lucky I don't kill people unless I'm paid to."
While she lays on the floor, we get a moment with Batista and Quinn. Batista is urging his friend to take exam to become a sergeant. "You should be taking the career more seriously -- especially if you're going to be dating my sister," he says, dropping the revelation.
Quinn asks how Batista knew. "Because I'm a good detective," he brags. So Batista finally solves one mystery! At the risk of recycling a bit from last week's recap, if Batista were truly a good detective he would have known this months ago -- as well a that Deb killed LaGuerta and Dex is the Bay Harbor Butcher. But I guess it's understandable. It's not like there's boxes of evidence and warrants against Deb in his living room or anything.
NEXT: How many guns does Deb carry??