3x17 Some Kind of Miracle
The doctors continue to work feverishly over Meredith, but she still has no heartbeat. Addison tells her friends to "prepare themselves."
Meanwhile Meredith is mentally still in the empty room with Denny and Dylan, who argue about the best way to break it to her that she's dead. They're joined by her dog, a dead nurse that used to work for Ellis, and a teenage girl, Meredith's first patient who died.