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
. See more
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. George O'Malley
[after hearing Meredith talk about McDreamy
I think I'm going to McVomit.
Performed by Joshua Radin
Courtesy of Sugaroo o/b/o Joshua Radin See more