Dexter and the Dark Passenger. They've been together for as long as we've known our charming serial killer, but in swoops Hannah, a girl he barely knows, and out goes the thinking that has balanced his entire life.
It all started when the arsonist struck again; fifth time's the charm right? Dexter gets to thinking that the arson inspector looks a little fishier than he has a right to be. While he doesn't seem to share Dexter's cold eyes, he must have a strong stomach to smell the burnt bodies.
While Dexter is rarely wrong about his lizard instinct, Dexter follows him to a Civil War reenactment. The arson inspector happily provides an alibi for the last fire and some pictures of the great costumes as well.
Dexter stops by Hannah's house, mentioning his desire to let his Dark Passenger take out the arsonist. Hannah guffaws at the idea that there is someone else in Dexter's brain, but the two are interrupted by Hannah's father, Clint.
Clint is all apologies for all the trouble he caused her, but neither Hannah nor Dexter seem to buy his act. As a piece offering, Clint brings her childhood dollhouse, but it might be more therapeutic if she smashed it with a sledgehammer.
Dexter joins Hannah and her father for dinner, and things seem to have improved. To top things off, Dexter offers to bring them donuts for breakfast. I couldn't be more jealous.
But breakfast doesn't go as planned, as dear old dad asks for $20,000 with his orange juice. She refuses, and Clint dashes off. But the fight continues between Dexter and Hannah, with her throwing his Dark Passenger back in his face. I'm always worried that when two killers fight, the next thing thrown isn't going to be an insult but a sharp, shiny knife.
Quinn gets an emergency call from Nadia. He rushes to her aid, but ends up shooting her boss. He gets Nadia to shoot him in the arm right before Batista charges in. The dirty cop just got a lot dirtier, and he might be taking Batista down with him. Batista isn't buying Quinn's story, but agrees to hide the fact that Nadia was there when the cops show up to take their statements.
Mazuka lifts a print off the arsonist's latest crime scene, but it doesn't match anything in the system. But have no fear, Dexter's here! Dexter breaks into the Juvenile’s Records Office and he finds a match -- Joseph Jensen.
Before he can leave, his father enters the scene to continue Hannah's line of questioning, pushing the idea that maybe the Dark Passenger was simply a coping mechanism, and that really it's just a feeling. No one likes to be responsible for murder though.
LaGuerta and Mathews continue to pursue leads about the Bay Harbor Butcher. They go to the property where Doakes was killed and discover that at the time, it was rented by Jiminez, a drug dealer.
Back at an exceedingly dingy diner, Mathews remembers that Jiminez was one of the three men responsible for Dexter's mother’s death. Mathews says he'll chat with Dexter about it, so that LaGuerta won't screw it up. What happened to the days when she just wanted to sleep with Dexter? Then again, maybe it's part of the job description of being Lieutenant, as so did Deb.
Hannah's father shows up at Dexter's apartment. He rudely comments on Jamie's half-clothed appearance. While completely out of line, it's about time someone did. She rarely is appropriately dressed for her job as a nanny.
Jamie takes Harrison to the beach, leaving Dexter and the father to speak. Hannah's father attempts to blackmail him. Apparently it was him that was spilling to the author, Price, about Hannah's past. He couldn't have picked a worse person to try to threaten, however. Those cold eyes of Dexter's? We see them a lot tonight.
Dexter takes the news of Hannah's backstabbing father to her, and she realizes she is going to have to pay him. Dexter is angry, but Hannah's father doesn't fit the Code. Not like Jensen does.
Dexter goes after him, strapping him down in plastic. But the final speech he gives him is eerily similar to how Dexter's father told him he needed to take responsibility for his actions.
Next thing we know, Deb shows up at Jensen's, and finds him passed out. Arsonist caught. Deb knows that Dexter handed Jensen to her on a silver platter, too. Too bad Dexter isn't as lenient with Hannah's father. Dexter realizes that there isn't a Dark Passenger in him, that it's just him. His first kill simply for that -- to kill.
Dexter tells Hannah the dreadful news about her father, and she takes it so well that she announces her love for him. Okay, there were a couple steps in between, but it was within the same moment.
But before we can get too happy, Deb tells Batista to find a girl named Arlene, because Hannah's father called and left a message with details about Hannah's past. Oh dear, I see a showdown coming in the future between the two women who love Dexter. So much for love conquering all.