Hadley comes forth with a drug-related diagnosis, because she's got drugs on the brain. And in the brain. And the bloodstream. Kumar says the tox screen was clean, but Hadley says they could be looking at damage from doing drugs a long time ago, which wouldn't show up on a tox screen now. Kumar gets all angry on the patient's behalf again, saying they shouldn't make assumptions about her lifestyle just because she's 16. House tells him to shut up and check the girl's home for drugs and toxins because arguing about it gets them nowhere. Again, what's happened to House? Doesn't he like watching people argue? I guess not when it's Kumar doing the talking.
The Cottages disperse except for Foreman, who wants to talk to House alone. He says he's been asked to run a clinical trial and needs House's permission. House asks what's in it for him if he says yes. Nothing, but Foreman thinks that with four doctors working one case at a time, House should be able to spare him. House doesn't think so, asking what he's supposed to do if there's some kind of emergency with the patient. Foreman says Sophia, or any of House's patients, will remain his priority over the trial. "No," House says. Foreman storms off.