Arizona's bad day escalates when she advises a patient on a potential double amputation; Derek breaks a promise; Stephanie and Jo find an abandoned baby; the non-fraternization rule leads to a suspension.
Cast: Ellen Pompeo, Sandra Oh, Justin Chambers, Geoffrey Arend, Gabriel Bateman, Alanna Boatright, W. Earl Brown, Jessica Capshaw, Lydia Castro, Gaius Charles, JD Cullum, Nicole Cummins, Patrick Dempsey, Sarah Drew, Tessa Ferrer