House would not agree. So it's a challenge he meets by demanding some of Wilson's pills to prove he's not depressed. Wilson, inexplicably – except I've explicated it in this review before the episode did – refuses.

There's an odd, but also funny and sexy, scene in there when Cameron sneaks into House's apartment to wake him up in the middle of the night, since he's not answering the phone (hmm, because of the drugs?). She's getting good at that breaking and entering thing. "What did you do?" she exclaims when she turns on the light and sees his face. "Nothing! This is what regular people look like when you wake them up."

Chase's diagnosis of autoimmune has been proven wrong, leaving only an infection that comes and goes through various body parts on the table again. House is ecstatic. Inappropriately ecstatic and self-absorbed, as his team points out. Foreman considers it yet another sign that his decision to quit was the right one. To House, confirming the diagnosis is all that matters. The fact that it's incurable doesn't dampen his Prozac-enhanced spirits, because his curiosity has been satisfied, and curiosity is what drives him, not that Ben and Jody are losing their only daughter, Addie.

House on anti-depressants is just as inappropriate as depressed House, but in a different way. At least miserable House isn't bursting with joy about the prospect of a patient's heart attack or telling her exactly how she's going to die a painful death.

But House takes Foreman's objections as a clue he wants to stay: "Suddenly you're trying to turn me into a kinder, gentler ass." That sounds like a familiar quest. Maybe Foreman's been hanging out on the Internet.

House takes the point enough to learn the patient's name before telling her she's dying, but he can't help but smile at his cleverness for deducing her rare disease that offered few clues. She shuts him down, though, and won't let him tell her what that disease is. She is a smart college girl - she couldn't have hit him where it hurts any more accurately than if she were Wilson.

"What's the point of living without curiosity?" he rages, but with a smile, which she points out. She doesn't point out that when you're dying, you don't really need a point to live.

Glancing at something shiny, House gets visual proof that Addie is right, he's smiling, and he finally pieces together why Wilson has been bringing him coffee every day. He does not, however, accept the proof of what that coffee has done to him, insisting that he's been hazy rather than happy since being dosed. Wilson scoffs at the idea that a dying girl mistook hazy for happy, leading House to realize that the dying girl was no different than she'd ever been.