Derek and Addison are shaken by the arrival of a figure from their past. Meanwhile, Burke learns Cristina's secret, Izzie deals with a very unusual case, Meredith delves into her family's dirty laundry, and George pours his heart out.
Did You Know?
Every episode of the show is named after a famous song. "Yesterday" is a song by The Beatles
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When Dr. Mark Sloan first appears and is introducing himself to Meredith, when Derek punches him, he uses his left hand. In the subsequent scenes, the ice bag and swelling is on his right hand. See more
Dr. Isobel "Izzie" Stevens
You know when you don't have sex for a while you sort of forget how good it is and you don't really need it as much?
Dr. George O'Malley
Yeah, that doesn't happen to guys.
Everybody Needs a Fence to Lean On
Performed by Headlights
Courtesy of Polyvinyl See more