Dr. Ayersman does the transplant as Chase watches outside, looking sad and remorseful. The surgery was a success, but two months later, Kayla came in for a follow-up exam. "Honestly --" Chase starts, and Stacy interrupts to ask if that implies that he's been lying up until now. Fed up, Chase asks her if they can cut a deal where he doesn't say "honestly" again and she stops taking out her anger at House on him. Stacy's reaction is a slight movement of her eyebrows into what I'm guessing is her "oh, I just got TOLD" facial expression. Chase adds that he didn't want to see Kayla again, but House made him do her exam instead of, say, a doctor who specializes in post-transplant operation care.
Chase asks Kayla about her daughters, and, contrary to what Foreman said before, really does seem interested in what she has to say. But he's even more interested in the fact that Kayla has a slight fever. He asks her as many follow-up questions as possible about coughing and urination pain, then says that the immunosuppressants she's on from he transplant are supposed to block fevers, so even a slight one is odd. He's going to do a full work-up on Kayla because, as he tells Stacy, he wasn't about to make any more mistakes.
Back in the meeting room of the past, Foreman looks at the results of Kayla's latest bloodwork and says she's rejecting the new liver. Chase insists that it's just a simple strep infection, no matter what Foreman says to indicate otherwise, until House tells Chase and strep to "get a room already." Hee. Sam walks in and asks House if he's House. House stands behind Foreman and asks Sam if he's planning on hitting Dr. House, pointing to Foreman, who does the most awesome double take. Sam doesn't think House has the right to be "cute" with him, considering that House hasn't even seen the woman he's treating. True, but if House did that, this show wouldn't be nearly as entertaining. Sam wants to know if his sister has hepatitis, and shows off an impressive knowledge of the disease for someone who isn't a doctor. House finds that suspicious. "He just donated his liver," Cameron points out. House notes that Sam's face is flushed, indicating that he's sick as well, and that he has a crappy homemade tattoo, a common way of getting hepatitis C. House guesses that Sam knew he had hep C and paid that lab tech off to conceal the fact so he'd be able to give Kayla his diseased liver. "You paid someone off?! That is totally unethical!" House says, knowing exactly how hypocritical he sounds. He orders MRIs for both Sam and Kayla. Sam asks if Kayla got hep C from him. I'd say that's a pretty safe bet, genius. But House reassures him that that's not the case. He's pretty sure Sam gave Kayla cancer. I thought he was being sarcastic at first, but he looks dead serious as we cut to commercial, so I guess not.