Blue Bloods
S08E21 The Devil You Know
Frank finds himself at odds with a data-monitoring firm that declines to access a terrorist's phone, which could reveal vital details about potential attacks. Meanwhile, Erin receives a tip-off about a looming assassination from an unreliable informant.
Season 8 Episodes
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7
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9
10
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22
Cutting Losses
Ghosts of the Past
The Enemy of My Enemy
Out of the Blue
The Forgotten
Brushed Off
Common Ground
Pick Your Poison
Pain Killers
Heavy Is the Head
Second Chances
The Brave
Erasing History
School of Hard Knocks
Legacy
Tale of Two Cities
Close Calls
Friendship, Love, and Loyalty
Risk Management
Your Six
The Devil You Know
My Aim is True