I Will Follow You Into the Dark

Name: I Will Follow You Into the Dark
Director: Rob Corn
Released: 2009-03-12
Duration: 43 min
Rating: 8.4
Cast: Jessica Capshaw, Loretta Devine, Gloria Garayua, Mark Saul, Wendy Hoopes

S5 E17 March 12, 2009 0h 43m ★ 8.4

Source:

Overview

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."