Joshua Wolf Coleman

Derek faces a lawsuit on his first day as interim chief when a patient awakens from anesthesia during surgery; Mark refuses to speak to Lexie.

House and his team investigate when a college student collapses after having sex with his girlfriend. The boy has too many symptoms to determine a disease, and as the doctors try to find out what is wrong, his condition seems to worsen.

When Zoe's mom (recurring guest star JoBeth Williams) takes her on as a client, Zoe is secretly thrilled that she will finally get her mother's undivided attention. Brick is surprised to hear that Lemon is returning to town soon, so he enlists Lavon's help to throw a welcome home party for her. However, her return hits an unexpected snag and she is forced to turn to Wade for help. Meanwhile, George is roped into helping Magnolia (recurring guest star Claudia Lee).

Pete discovers Charlotte at the hospital after she's brutally attacked but she only tells Addison that she was also sexually assaulted.