Rita's. The phone rings, and it's got to be FIP. "Dexter?" she answers. "It's me," says FIP. Heh. "Paul, this is harassment." "Just tell me he's acting weird," he says. Rita threatens to never let him see the kids again if he keeps it up, and he says, "Fine, if that's what it takes for you to listen to me. I just want to know that they're safe." "Why are you doing this, Paul? You want me to be miserable and alone like you, is that it?" "All I want is for you to look for a shoe." He tells Rita that a shoe was missing from the items the police collected from his hotel room, and he had been wondering why his ankle was so bruised, and he thinks it's because it fell off when Dexter was dragging him. Rita hangs up on him, but she looks around herself for a second before saying, "Screw you," to nobody in particular.
"What did I just do?" Dex VOs as the camera slowly makes its way down the hallway corridor towards him. "I drove away a brother who accepts me, sees me, for an adopted sister who would reject me if she knew, and a foster father who betrayed me. That's what it was: a betrayal. The most important single fact about me. I'm not alone, and Harry kept it from me. What do I really owe him after that?" I suppose nothing, dude, but he's dead. You didn't just save Deb because of Harry's code; I'm just sayin'. A doctor comes out and asks for him. "That's me." "Your sister has a few bruises, but no major injuries. Still, you should keep an eye on her. I'll write a prescription for a mild sedative." "She's okay, right?" "She can go home tonight, as far as I'm concerned, or we can keep her here at the hospital. It's your choice."
As she lies in Dexter's bed, asleep, Dexter draws the blinds and says, "Don't worry, the sheets are clean. We aim to please here at Chez Dex. I'll be sleeping on the couch with a spring in my side just to make sure you're safe tonight, but we're going to have to talk tomorrow about a long-term plan. After you get a good night's sleep. Deb?" No answer. He pets her head for a minute, and the camera switches to a view from outside as a few double-basses hold a low note in the soundtrack, letting us know they're being watched. Back inside, Dex says, "Good night, sister," shuts the light, and goes to bed.
Dexter's asleep on the couch as some Santa Claus special plays on the TV, and someone is picking his lock. Quietly, Brian opens the front door, and peeks in creepily. He silently walks over to where Dexter is sleeping and watches him for a minute, then turns around and quickly heads to the master bedroom. As soon as he's in there, he stabs Deb in the back, but she doesn't make a noise. He rips up the covers to reveal that it's just a dummy, in parts that look just like the ones he's left at so many of his own crime scenes. In a flash, Dexter has a piece of piano wire around Brian's neck. "I stopped by your prosthetics lab after I left Deb at the hospital." Brian begins to lose consciousness. "Your work is so good, you even fooled yourself." He's out. "Sweet dreams, Biney."