Fran is prepped for surgery.
House gets ready to slice into the Korean. The flight attendant helps, because she's the AirEvil Nurse Brenda. Or maybe she's the AirWilson. I can't decide. House tells them to hold the guy tight. AirChase lifts his hands off the Korean, who moans in pain. Then AirChase puts his hand back down on the Korean's shoulder and the Korean seems to be in less pain. House tells him to repeat that motion. AirChase does, and he gets the same result. House squeezes the guy's knee and notes that putting pressure on the Korean's joints seems to relieve his pain. Cuddy asks what that means. House says it means he was wrong "again." Well, I guess it's good that he found out now rather than, like, during or after the surgery. He asks for the Korean's wallet.
Foreman prepares to drill into Fran's head. This surgery prep sure is taking a while.
Chase goes outside and tries to follow the pipe from Fran's basement. He finds it connected to Fran's next-door neighbor's house, which has a note on the door that reads, "Premises have been fumigated with methyl bromide. No admittance for 72 hours." Chase whips out his cell phone. Back in the OR, Cameron gets the call in time to stop the unnecessary surgery. Again, this is just a little too parallel with the plane stuff for me. While I like twists and turns on this show as much as anyone, there were one or two too many in this episode.
House finds a SCUBA certification card in the Korean's wallet. Cuddy doesn't think that's a big deal, but House follows that up with a receipt for a SCUBA equipment rental dated yesterday. Cuddy finally realizes what's going on and orders AirWilson/Evil Nurse Brenda to tell the pilot to drop the plane as low as possible, because the Korean has the bends. Since I already talked about the time Mitch had the bends on Baywatch last week, I have nothing to add to this. Except that I know more about SCUBA diving than the Korean, who apparently didn't pay attention to the part of his class where they told him not to surface too quickly or fly less than twenty-four hours after SCUBA diving. Flying at a lower altitude should keep the plane's pressure high enough to keep the Korean alive.
Chase tells the now-awake Fran that her house shares pipes with her neighbor since they used to be one estate a long time ago. The exterminator didn't know that, and when he fumigated the neighbor's house, he exposed Fran's house as well. That doesn't explain how she got worse once she was removed from the home and its poison, but, whatever. The motion sickness patch masked the initial effects of the poison. Wilson says Fran will be fine in a couple days, even though she's needlessly bald. Also, her cat died. Sorry about that. Fran notes that she learned a Valuable Lesson: her cat never left her house in his twelve years of life, and he died because of it. She thought her illness was punishment for going away when she was really punished for coming home. Actually, I think she was punished for sharing a pipe with her neighbor and for her neighbor hiring an exterminator who didn't do all of his homework.