I Will Follow You Into the Dark (S05E17)
S05E17
Derek makes the difficult choice to resign after realizing that the number of his patients who have died surpasses those who have survived. Meanwhile, Izzie's interns stumble upon a troubling revelation concerning "Patient X."
Show
The Thick of It
Episode
S05E17
Air Date
Mar 12, 2009
Season 5 Episodes
S05E01
Dream a Little Dream of Me (1)
S05E02
Dream a Little Dream of Me (2)
S05E03
Here Comes the Flood
S05E04
Brave New World
S05E05
There's No 'I' in Team
S05E06
Life During Wartime
S05E07
Rise Up
S05E08
These Ties That Bind
S05E09
In the Midnight Hour
S05E10
All by Myself
S05E11
Wish You Were Here
S05E12
Sympathy for the Devil
S05E13
Stairway to Heaven
S05E14
Beat Your Heart Out
S05E15
Before and After
S05E16
An Honest Mistake
S05E17
I Will Follow You Into the Dark
S05E18
Stand By Me
S05E19
Elevator Love Letter
S05E20
Sweet Surrender
S05E21
No Good at Saying Sorry (One More Chance)
S05E22
What a Difference a Day Makes
S05E23
Here's to Future Days
S05E24
Now or Never