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Grey's Anatomy 5x17

I Will Follow You Into the Dark

Derek decides to quit after learning that more of his patients have died than survived; Izzie’s interns make an unsettling discovery about “Patient X.”

Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Grey’s Anatomy: S05E17
Mar. 12, 2009

Grey's Anatomy season 5