House

Don is working with his autistic son, Adam, but doesn't have much luck. Adam is more interested in drawing lines on a chalkboard. Over lunch, Adam starts to choke and scream.

House meets for a differential diagnosis for Adam but he appears distracted and after ordering some tests, goes to Cuddy to complain that he wants his old blood-stained carpet back. Cuddy refuses and he won't go back into the office. While an increasingly bored House works the clinic, his staff try to strap the screaming Adam into the MRI. Chase and Cameron then go to the house to run tests.

House eventually finds Ali in the office and starts coming on to him. They're interrupted when Cameron reports the tests are negative. House runs a staff meeting in the hallway and tells them to get a stool sample and Adam has another fit, coughing up fluid from his lungs.

House moves into Wilson's office for another differential--Wilson is less than thrilled. They move into the conference room and analyze the new test that shows a heart problem. Cuddy comes in and tells House that Ali has been calling him 15 times and is going to notify security, but House isn't concerned.

Foreman goes to Wilson for advice on the possibility of Adam having lymphatic cancer and asks him to run a test on Adam. Another screaming fit ensues and House manages to get through to Adam to get him to take anesthesia by doing it himself. House doesn't think much of it but admits he envies Adam since he doesn't have to worry about social niceties. Wilson runs the tests but they're not lymph cells from his armpit, their liver cells… under his arm.

Another differential in Wilson's office and House suspects the liver is damaged and the cells passed into the bloodstream, even though the liver was normal. House suspects cirrhosis despite the lack of scarring, and he wonders if the parents gave something to Adam to get rid of him. Wilson talks to Cuddy and suggests she get the carpet put back in but Cuddy stands firm.

House has moved to Cuddy's office to get Foreman's report of calcium carbonate in the stool, but they're interrupted when Adam is rushed to cardiac ICU. They stabilize Adam and discuss the case, but the test for poisoning proves negatives. House suspects Adam may have put something else in his mouth and orders the staff to get samples from the house.

As House is leaving, he finds Ali waiting for him on his motorcycle. She assures him that she'll be legal in 22 weeks and asks why should they wait. Cuddy arrives and sends her off.

Cameron finds jimson weed in the backyard, which accounts for the symptoms except for the screaming. They can get the tests back in three days but Adam won't survive that long. House goes over Adam's schedule and doesn't believe he had any unsupervised time to eat the jimson weed. House goes to talk to Adam and tries to get through to him by taking away his handheld game. Adam manages to indicate the sandbox before his right eyeball rolled back into his head.

It's time for a new meeting in the hospital chapel and Foreman suggests a micro-tumor but it would require three tumors to account for the symptoms. If they can't find it on a CT, they'll have to remove his eye.

Cuddy tells House that Ali came to her house and came on to her the previous night, but she's lying. She does have Ali locked up in her office and House goes to meet with the girl and talk her out of it. But he sees her milky tears and concludes she breathed in spores that caused a loss of judgment.

House finally makes a connection and (after interrupting the wrong surgery) finds Adam in his room, kills the light, and finds worms in his eyes. Adam ate sand in the sandbox with raccoon excrement, which spread through his system, wouldn't show up on the parasite tests, and caused all the symptoms. Laser surgery and medication will take care of them, and House assures the parents they will have Adam around for a long time.

Wilson suggests to Cuddy that House has a minor form of Asperger's autism and took the case to "help himself," and he needs the carpet back. Wilson then confronts House and points out he doesn't have Asperger's but House would rather have that kind of freedom. As the family leaves, Adam gives House his handheld and his parents take it as a positive sign. And House gets his carpet back.