GREY'S ANATOMY - &quot;Stairway to Heaven&quot; - Derek begs Cristina to speak to an inconsolable Meredith, on &quot;Grey's Anatomy,&quot; THURSDAY, JANUARY 22 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/CRAIG SJODIN) SANDRA OH, PATRICK DEMPSEY
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