Chase diagnoses the patient, Brian, with nosebleeds that ran down the back of his throat instead of out of his nose. He then coughed the blood back up, making it look like he was coughing up blood. The rest of his symptoms can be explained by the flu. That's ridiculous, but the rest of the Cottages except Martha are quick to go with it because it means they get to leave work now. Martha once again ruins everything by suggesting toxic exposure to certain chemicals, which fits Brian's symptoms better than Chase's suggestion. House agrees, and Martha smiles hugely at getting his approval while her co-workers look like they want to give her a few nosebleeds that run down the back of her throat instead of out her nose. House leaves them with orders to search Brian's home to look for toxins.
House gets off the phone, and Hadley asks him about his marriage. Instead of smiling enigmatically and refusing to answer Hadley's personal questions, House tells her it's a green card marriage. See how easy it is to share personal details with people, Hadley? Maybe you should try it sometime. Hadley starts to thank House for not telling the others about her, but he says he did it for purely selfish reasons: "some puzzles are just too good to share." Seriously? He can't just look up the details of her case? Aren't they a matter of public record? Especially since House is her boss (she only took a leave of absence, right? She didn't quit) and she's a doctor and she now has a criminal conviction for abusing her medical license. With that, House drives past Hadley's exit, which looks to be an actual New Jersey highway exit, so way to go on location or at least pay for the proper stock footage, show! Hadley watches her exit pass and sighs, wondering if three days with House is better or worse than all those months in jail. House reassures her that they aren't going to Synecdoche for the chili: it's all about the spud guns.