Blue Bloods
Season 8 Episode 21 - The Devil You Know
7.8 ?
2010
Crime, Drama
Frank locks horns with a data-tracking company when they refuse to unlock a terrorist's phone that may hold information regarding upcoming targets. Erin obtains information about an impending murder from a shady source.
Episodes in Season 8
1
Cutting Losses
45 min
2
Ghosts of the Past
45 min
3
The Enemy of My Enemy
45 min
4
Out of the Blue
45 min
5
The Forgotten
45 min
6
Brushed Off
45 min
7
Common Ground
45 min
8
Pick Your Poison
45 min
9
Pain Killers
45 min
10
Heavy Is the Head
45 min
11
Second Chances
45 min
12
The Brave
45 min
13
Erasing History
45 min
14
School of Hard Knocks
45 min
15
Legacy
45 min
16
Tale of Two Cities
45 min
17
Close Calls
45 min
18
Friendship, Love, and Loyalty
45 min
19
Risk Management
45 min
20
Your Six
45 min
21
The Devil You Know
45 min
NOW PLAYING
22
My Aim is True
45 min
