Below is the first promo for "Elevator Love Letter," this Thursday's all-new episode of Grey's Anatomy. It's the 19th episode of the show's current fifth season.
The big stories: Derek returns to the hospital to perform his first surgery since his breakdown, Izzie's medical condition requires her to undergo a difficult operation of her own, and Owen experiences another PTSD episode that injures Cristina and traumatizes both.
Sneak previews and photos to come! Here's the promo ...
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