Blue Bloods

Season 8 Episode 21

The Devil You Know

Aired Friday 10:00 PM May 04, 2018 on CBS
7.9
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Episode Summary

EDIT

Frank goes head-to-head with a data-tracking company when they refuse to unlock the phone of a terrorist that may hold information regarding upcoming targets. Also, when Erin obtains information about an impending murder from a shady source, she gets Danny and Baez involved, despite the questionable agenda of the informant, and Jamie and Eddie try to locate a woman who kidnapped a newborn baby.

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Who was the Episode MVP ?

Tom Selleck

Tom Selleck

Frank Reagan, New York City Police Commissioner

Donnie Wahlberg

Donnie Wahlberg

Danny Reagan

Bridget Moynahan

Bridget Moynahan

ADA Erin Reagan-Boyle

Will Estes

Will Estes

Jamie Reagan

Vanessa Ray

Vanessa Ray

Edit "Eddie" Janko

Len Cariou

Len Cariou

Henry Reagan

John Pankow

John Pankow

John Romano

Guest Star

Nellie Campbell

Nellie Campbell

Sofia

Guest Star

Gil Perez-Abraham

Gil Perez-Abraham

Jorge

Guest Star

Bebe Neuwirth

Bebe Neuwirth

Kelly Peterson

Recurring Role

Gregory Jbara

Gregory Jbara

DCPI Garrett Moore

Recurring Role

Robert Clohessy

Robert Clohessy

Lt. Gormley

Recurring Role

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Trivia, Notes, Quotes and Allusions

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