Grey's Anatomy - Season 5 Episode 17 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."
- Genre: Drama
- Studio: ABC
- Keyword: seattle, washington, trauma, workplace, hospital, doctor, medical student, surgical interns, medical drama
- Cast: Ellen Pompeo, Chandra Wilson, James Pickens Jr., Kevin McKidd, Caterina Scorsone, Camilla Luddington
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