A Shade of Gray (S04E21)
S04E21
While investigating a string of child abductions and murders, the team uncovers evidence suggesting that one particular case might not be linked to the serial killer they have in custody.
Show
The Incredible Pol Farm
Episode
S04E21
Air Date
Apr 22, 2009
Season 4 Episodes
S04E01
Mayhem
S04E02
The Angel Maker
S04E03
Minimal Loss
S04E04
Paradise
S04E05
Catching Out
S04E06
The Instincts
S04E07
Memoriam
S04E08
Masterpiece
S04E09
52 Pickup
S04E10
Brothers in Arms
S04E11
Normal
S04E12
Soul Mates
S04E13
Bloodline
S04E14
Cold Comfort
S04E15
Zoe's Reprise
S04E16
Pleasure Is My Business
S04E17
Demonology
S04E18
Omnivore
S04E19
House on Fire
S04E20
Conflicted
S04E21
A Shade of Gray
S04E22
The Big Wheel
S04E23
Roadkill
S04E24
Amplification
S04E25
To Hell... (1)
S04E26
...And Back (2)