Arizona Robbins -- an extremely peppy Jessica Capshaw -- is the new pediatric surgeon who happened to be available to start a new job on 5 minutes notice. She introduces herself to Bailey but immediately ends up on Bailey's bad side by wondering why Kenley kept up a course of treatment that wasn't working. Bailey stands up for the deceased doc and protests that they hadn't turned the corner yet, but Arizona counters that Jack's case is severe. Bailey icily corrects her that the boy's name is Jackson, and it's apparent that this will be a long first day for poor Arizona. She tries to smooth things over by agreeing to do the procedure that day but that afterwards if it doesn't work she'll look for other options. She then excuses herself to take care of Kenley's big, invisible caseload, turns the corner and zooms off on those tennis shoes with little wheels in the soles. Do they even really make those shoes in adult sizes? I'm not buying it. We get it, guys -- she's young and CRAZY.
Eric is still moaning about the pain in his legs, and Hunt comments that it would be better if they could get him off the board. Given a sympathetic opening, Mere points out that Eric has decreased feeling in his leg, but Derek says that's just what he's saying, and he could be saying anything. Eric asks for more morphine and Cristina chimes in that they aren't there to feed his drug habit, though Eric reminds her that the drug traffic in solitary is rather slow. Meredith wants to wait and look at the films to see what could be causing his pain, but Derek and Cristina think it's a waste of time and Hunt can only glance furtively from person to person. A tech then comes and puts the debate to rest by delivering the films, which show that Saintly Meredith is right -- he's got something long and stabby-looking lodged in his spine. Eric is delighted because if he's paralyzed, his execution date for the following week could possibly be postponed but that gives Derek a reason to work his hardest to make sure he's in working order to be put down. Hunt continues to do nothing but look troubled.