After considering several candidates, Meredith (Ellen Pompeo) decides who will be her roommates during her first-year internship. Back on the job, she butts heads with a pediatric intern to save the life of a newborn child, and also claims temporary possession of a gruesome "souvenir" left behind by the man who raped her patient Allison (Alex Thayer). Meanwhile, Cristina (Sandra Oh) and Alex (Justin Chambers) get their act together, so to speak; George (T.R. Knight) spends a few disheartening hours with the Seattle Grace code team; and Izzie (Katherine Heigl) copes with a patient who speaks no English. In other developments, Burke (Isaiah Washington) finds out why Derek (Patrick Dempsey) may be chosen as chief of surgery over hm; and Webber (James Pickens Jr.) remains close-mouthed over how well he knew Meredith's mom. ~ Hal Erickson, Rovi