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Blue Bloods – Season 8, Episode 21 The Devil You Know

Play trailer Blue Bloods – Season 8, Episode 21 The Devil You Know Aired May 4, 2018 Crime Drama Action Entertainment Play Trailer Watchlist
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Frank locks horns with a data-tracking company when it refuses to unlock a terrorist's phone that may hold information regarding upcoming targets; Erin obtains information about an impending murder from a shady source; a woman kidnaps a baby.
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Blue Bloods — Season 8, Episode 21

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Cast & Crew

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Tom Selleck

Frank Reagan

Donnie Wahlberg

Danny Reagan

Bridget Moynahan

Erin Reagan

Will Estes

Jamie Reagan

Len Cariou

Henry Reagan

Marisa Ramirez

Detective Maria Baez
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Blue Bloods — Season 8, Episode 21

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Episode Info

Synopsis Frank locks horns with a data-tracking company when it refuses to unlock a terrorist's phone that may hold information regarding upcoming targets; Erin obtains information about an impending murder from a shady source; a woman kidnaps a baby.
Director
John Behring
Executive Producer
Leonard Goldberg, Kevin Wade
Screenwriter
Peter Blauner
Network
CBS
Rating
TV-14 (L|V)
Genre
Crime, Drama, Action, Entertainment
Original Language
English
Release Date
May 4, 2018