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GREY'S ANATOMY - "I Will Follow You into the Dark" - Derek is heartbroken as he's confronted with the sheer number of patients he's lost versus the few he's saved, on "Grey's Anatomy," THURSDAY, MARCH 12 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/RON TOM) PATRICK DEMPSEY
In This Photo: Derek Shepherd