I Will Follow You Into the Dark

Full Summary
To be posted after the episode has aired

Music
This episode's title originated from the song I Will Follow You into the Dark, originally sung by Death Cab for Cutie.

Hospital Staff

 * Ellen Pompeo ... Dr. Meredith Grey
 * Sandra Oh ... Dr. Cristina Yang
 * Katherine Heigl ... Dr. Isobel 'Izzie' Stevens
 * Justin Chambers ... Dr. Alex Karev
 * T.R. Knight ... Dr. George O'Malley
 * Chandra Wilson ... Dr. Miranda Bailey
 * James Pickens Jr. ... Dr. Richard Webber
 * Sara Ramirez ... Dr. Callie Torres
 * Eric Dane ... Dr. Mark Sloan
 * Chyler Leigh ... Dr. Lexie Grey
 * Kevin McKidd ... Dr. Owen Hunt
 * Patrick Dempsey ... Dr. Derek Shepherd

Guest Starring

 * Jessica Capshaw ... Dr. Arizona Robbins
 * Brandon Scott ... Dr. Ryan Spalding (Credited as Intern Ryan)

Patients and relatives

 * Michael Rady ... Mike Shelley
 * Wendy Hoopes ... Tricia
 * Erin Cahill ... Meg
 * Susane E. Lee ... Beth

Hospital family/Friends

 * Loretta Devine ... Adele Webber