Grey's Anatomy Season 5 Episode 21

Grey's Anatomy → Season 5 → Episode 21: What a Difference a Day Makes
A car crash involving students going to their college graduation takes its toll on the residents in the ER, Derek's wedding gift is uniquely suited for Meredith - even if the oversight is not. Meanwhile, Denny's return has Derek and Bailey searching for the cause, and the results will change the outcome of the day.
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Watch What a Difference a Day Makes
Air Date: 7 May 2009
Director: Rob Corn
Language: English
Runtime: 60 Minutes
More Info: IMDb

Cast: Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, T.R. Knight, Chandra Wilson, James Pickens Jr., Sara Ramirez, Eric Dane, Chyler Leigh, Kevin McKidd, Patrick Dempsey, Jeffrey Dean Morgan, Jessica Capshaw, Amy Gumenick


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