Grey's Anatomy

I Will Follow You Into the Dark

E17    Mar 12, 2009    43m    TV-14
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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."
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Cast of I Will Follow You Into the Dark
  • Ellen PompeoMeredith Grey
  • Chandra WilsonMiranda Bailey
  • Sandra OhCristina Yang
  • James Pickens Jr.Richard Webber
  • Kevin McKiddOwen Hunt
  • Katherine HeiglIzzie Stevens
  • Justin ChambersAlex Karev
  • T.R. KnightGeorge O'Malley
  • Sara RamirezCallie Torres
  • Patrick DempseyDerek Shepherd
  • Eric DaneMark Sloan
  • Chyler LeighLexie Grey
  • Jessica CapshawArizona Robbins
  • Loretta DevineAdele Webber
  • Gloria GarayuaIntern Graciella
  • Wendy HoopesTricia Shelley
  • Erin CahillMegan Shelley
  • Michael RadyMichael Shelley
  • Candice AfiaIntern Laura
  • Nicole RubioParamedic Nicole
  • Molly KidderIntern Megan
  • Brandon ScottRyan Spalding
  • Joe WilliamsonIntern Pierce
  • Winston StoryIntern Leo
  • Amrapali AmbegaokarIntern Dani
  • Tymberlee HillIntern Claire
  • Susane LeeBeth Dearborn
  • Phil AbramsDr. John Nelson
  • B.K. CannonGirl Band Geek
  • Mark SaulIntern Steve
  • Marcus McGeeBoy Band Geek

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