House says they can now rule out psychopathy as a symptom, since syphilis was the only possible diagnosis that incorporated it and kidney failure rules it out. Foreman suggests lymphoma, and House tells the Cottages to immediately start Valerie on radiation. Hadley doesn't think they should do that without testing Valerie's urine to prove Foreman's theory, but her failing kidneys mean she has no urine to test, as Foreman makes sure to point out in the most sarcastic way possible. Bickering ensues until House interrupts to send everyone out of the room who hasn't slept with someone else in the room. Chase happily takes off, but Taub stays behind. Upon the questioning stares, he looks at Hadley and says "oh, sorry. That was our secret. Right." I love him. But he leaves the room so we have to suffer through more Hadley/Foreman drama as House tells them to either sleep together, fight, or quit.
Apparently they don't do any of those things, as we then cut to Valerie being wheeled off to radiation as Hadley stays behind with Ugly Husband, who is very worried. For some reason, he thinks they're jumping into this radiation treatment just a little early and asks if they truly ruled out everything else. Hadley nods, then has an idea of a great way to make a psychopath angry at her, which is a really good idea. She says they haven't ruled out environmental causes, and will need to know where Valerie told Ugly Husband she was like oh, say, every Thursday night. While Valerie was actually having sex with Russ, she told her husband she was at a landscaping class at the local Y. Hadley says a landscaping class could certainly expose Valerie to toxins and orders Ugly Husband to go find out everything he can about Valerie's landscaping class. Like how it doesn't exist.
Meanwhile, House is intrigued by his patient and asks her what it's like to be a psychopath as she waits for the radiation to begin. "When you watch Star Wars, which side do you root for?" he wonders. Yes, that's got to be up there on the list of life difficulties psychopaths face. "Dr. House, what are you doing?" Valerie asks, not unlike the creepy way HAL did in 2001: A Space Odyssey. She knows of House's hands-off reputation with patients, and yet he's spoken to her twice already. She thinks he's a little too interested in her psychopathy, possibly because he's a psychopath, too. She points out that he's showing how self-interested he is by delaying a sick woman's treatment just to satisfy his own curiosity. House says everyone is self-interested, but most of us also have consciences. Not that he's particularly thrilled to have his. "So if you know your conscience is just an animal instinct, you don't need to follow it. I think you realize that," Valerie says; "that's why you're talking to me." House decides not to talk to Valerie anymore.