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Season 8, Episode 15
Airing: February 16, 2012
Have You Seen Me Lately?
Derek's sister Amelia arrives from L.A. to ask Derek for help with Erica's gliosarcoma; Cristina and Owen argue heatedly during marriage counseling; Alex realizes that he must improve his people skills to be a good doctor; and Meredith gets a chance to shine when a man arrives in the ER with his hand stuck in a meat grinder. Meanwhile, the residents continue to study for their upcoming oral boards.