Derek and Meredith try (unsuccessfully) to be discreet as they spend the night together at Meredith's house, but their haggard appearance speaks volumes to everyone - including Bailey, who warns Meredith to end the relationship. Meanwhile George susp... (more)ects an anesthesiologist of drinking on the job but is reluctant to speak up about it, Alex treats a former competitor who now finds honor in self-mutilation, Izzie has to deal with a patient who won't let go of his girlfriend - literally, and Cristina seems to be battling a case of the flu.

Amanda MacDonald, Ever Carradine, Kim Morgan Greene, Rebecca Rogers, Russell Hornsby, Sarah Utterback, Shenita Moore, Vanessa Rogers