[s5e9] In The Midnight Hour -

: Tired of being ignored by their residents, the interns—led by Sadie Harris —begin performing procedures on one another. When Sadie convinces Lexie Grey to perform an appendectomy on her, the surgery goes horribly wrong, forcing Meredith , Cristina , and Bailey to intervene to save her life.

: Izzie continues to struggle with the presence of Denny Duquette , who appears to her as a "ghost". Despite her confusion and distress, Denny refuses to leave, even suggesting they take their supernatural relationship to a physical level. [S5E9] In the Midnight Hour

: Derek and Owen treat a man who severely injured himself while sleepwalking. His young daughter, Ivy , is terrified of sleeping because she feels she must watch over him. Mark Sloan eventually bonds with her, using his own childhood experiences to comfort her. : Tired of being ignored by their residents,

S5E9 -In the Midnight Hour (possible spoiler) : r/greysanatomy Despite her confusion and distress, Denny refuses to