S08 · E21

The Devil You Know

May 4, 201845mRating 8.0

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.

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The Devil You Know

Episodes

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