Hadley and Chase scan Darrien's brain. Chase wants to know why Hadley is risking so much for Darrien. Hadley says she made a promise, and promises are really important to her. Chase figures out that's because Hadley promised her brother she would kill him, thus allowing her to blame the promise she made for his death and not herself. Which means she has to keep every promise she makes, or else she'll feel really bad about killing her brother or whatever. Hadley just says that she did the best thing for her brother and that Darrien doesn't have a bleed in her brain. She does, however, have a fever.
Cuddy, Rachel, and House hang out in the ER. I'm assuming they're in PPTH, but I kind of expected better from its ER. House's heart rate says he's going into shock and he has a huge open gash in his tumor-filled leg, and yet, they're making him lie on a gurney in the hallway. Maybe they had a rush of people who also tried to do surgery on themselves? Cuddy fusses over House while he talks to Rachel about pirate cartoons. They have very different opinions about one episode; Rachel thought it was "so funny," while House found it to be "so lame." Cuddy grabs Rachel and runs off to find a nurse for House before he dies, leaving House to answer his ringing cell phone. It's Chase and Hadley, who need help diagnosing Darrien. House is a little annoyed with them for not taking his call when he needed them, but I guess he's bored, too, so he offers his assistance.
Taub waits for the stripper in his car. He asks his car to call Ruby. His car, actually sounding annoyed with him, asks if he wants to call her cell phone. He decides not to call her at all. His car is like "whatever, asshole."
Hadley tells House that Darrien was taking interferon while she was in prison, which Hadley guesses was for an advanced case of hepatitis C. They can't really ask Darrien to confirm that, though, as she is now in a coma. Oops! House notices that his leg is starting to bleed through the towel Cuddy wrapped around it. He takes a few more Vicodins and asks Hadley about Darrien's life pre-jail. Hadley now knows that Darrien was a cop who shot someone in self-defense. House says that all Hadley needs to do is find out when exactly that happened to figure out how long Darrien has been doing drugs, which should then give her a decent estimate on how long she's had hepatitis C. Chase doesn't think that's going to be very important to the case, but House points out that they don't have anything else to go on before hanging up on them as Cuddy arrives with a nurse.