More fun with lumbar punctures! Dad's not around for this one, so Cameron gets to hold Dan down, his face level with the cleavage from her low-cut top. To give him something else to focus on other than incredible pain, Chase points out how close he is to Cameron's boobs. Cameron sarcastically thanks Chase for objectifying her. "The kid's in pain," Chase says innocently. You know what's even better for distracting someone from pain? Voices in his head. Things are looking grim for old Dan as we go to commercial.
The team meets up to discuss Dan's newest horrible problems. The penicillin isn't working and Dan's brain is still degenerating. So he doesn't have neurosyphilis, which means those lumbar punctures were for nothing. This is why it's kind of important to be certain of your diagnosis before you treat it. The crew is back to square one, except now they have even less time to figure out what's wrong with Dan. The Cottages list off all possible causes -- including vasculitis, our old friend -- and why they're ruled out. House paces around the room and talks out loud about Dan's sick brain, and how it's torturing Dan. He orders a few brain tests, saying that if Dan's brain has something to say to them, they should find a way to listen to it.
Cut to House and Wilson, having lunch outside. House admits that he has no idea what's wrong with Dan and all that brain talking stuff was bullshit that he thought "sounded cool." Dan's parents come outside to enjoy their coffees and House is all "Oh, crap," because now he has to be held accountable for his actions. The Dan family walk up and yell at House for sitting around doing nothing while their son is dying. House softens his tone and says he understands that they need to vent. Dad accuses House of being "condescending," and that surely isn't the first time House has been told that. Dad then points out that House hasn't even seen their son. House makes it clear that even without seeing Dan, he's well aware of the kid's test results and vital signs. "Go hold his hand," House says, his tone sympathetic. Why, he'll even bus their tray. What a sweetheart! I was wrong about House this whole time -- I thought he was an arrogant asshole who hated people, and here he is showing his softer side! Oh, wait. After the parents are out of earshot, House asks Wilson for sample bags, so he can run DNA tests on the parents' saliva and win his bet. The kindness was just a front so he could get what he wanted. "You're an ass," says Wilson.