Episode
Blue Bloods: The Devil You Know
Overview
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.
Details
- Series
- Blue Bloods
- Season
- Season 8
- Episode
- Episode 21
- Air date
- 2018-05-04
- Runtime
- 45 min
Episode context
The Devil You Know is Episode 21 in Season 8 of Blue Bloods. It aired on 2018-05-04. The runtime is 45 min.
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Episode 20: Your Six
When Danny resorts to asking his incarcerated archenemy Victor Lugo for help locating a dangerous criminal who escaped from prison, Lugo refuses to assist unless he’s allowed to accompany them on the pursuit. Frank subtly tries to convince Jamie to take the sergeant’s test. Erin’s plan to go on a date with her ex-husband causes friction between her and Anthony.
Episode 22: My Aim is True
When a series of drive-by murders occur after six wrongly convicted men are released from prison, Danny and Baez wonder if they were orchestrated by these men as an act of revenge. Jamie and Eddie find themselves in a life-threatening situation.
More episodes from this season
Episode 19: Risk Management
Danny and Baez race to find a missing girl who will die within 72 hours without her heart medication. Jamie and Eddie are on the wrong side of an investigation after engaging in a car chase. Frank, Garrett and Gormley investigate the rise in the settlement of lawsuits against cops. Sean wins an essay contest and receives a medal from former New York City Mayor David Dinkins.
Episode 18: Friendship, Love, and Loyalty
After a woman voices her outrage regarding the NYPD’s inability to find her son’s murderer, Danny reexamines the case. Eddie is shot while on duty. Erin and her ex-husband face off in court — again. Frank contends with an angry police force when Mayor Dutton fails to defend them at a press conference.
Episode 17: Close Calls
After Danny’s brother-in-law gets caught up with the mob and steals Danny’s credit card, he forces him to take down the mobsters with Baez’s help. Frank has Erin and Anthony investigate if his old partner is truly guilty of a crime. Jamie is approached by an officer who wants his help getting reassigned from his undercover assignment at a mosque.
Episode 16: Tale of Two Cities
Danny and Baez investigate the murder of a man who was living a double life with two separate families. Anthony tries to resist when Erin asks him to help investigate his old partner, whom she suspects of stealing drug money. Frank deliberates between two candidates for the Chief of Transit position.
Episode 15: Legacy
Danny considers taking a new job that would ease his financial struggles after investigating the death of a wealthy man. Nicky tries to avoid involving her family when she is sexually harassed by her boss at her new internship. Garrett advises Frank to regain the public's trust after a rookie cop is caught on video questioning a pedestrian's immigration status.
Episode 14: School of Hard Knocks
When a student is shot by a rival gang member in his high school courtyard, Danny and Baez try to get a grasp on the situation to prevent a reoccurrence, but the principal recklessly takes matters into his own hands. Erin tries to help a friend who is mixed up in an illegal gambling ring. Governor Mendez tries to frame Frank after one of his top legislative aides is shot by an NYPD officer.
Episode 13: Erasing History
When Henry is the key witness on Danny and Baez's case, his meddling pushes Danny's buttons until it leads them to valuable information. Nicky shocks her family by siding with her activist friend, Chrissie, who defaced the NYPD flag at One Police Plaza. Jamie and Eddie learn a parole officer is taking advantage of his position.
Episode 12: The Brave
After Anthony is shot while interviewing a witness for an upcoming murder trial, Erin enlists Anthony's archenemy, Danny, to find out who was responsible. Jamie and Eddie get in the middle of a standoff between a police lieutenant and a developmentally disabled man posing as an officer. Nicky prepares to take the police exam.
Episode 11: Second Chances
When a journalist disappears while working on an exposé about an innocent man serving time for murder, Danny and Baez hope that reexamining the original case will help find her. Frank reluctantly speaks out against an initiative led by Erin's office to consider drug abuse as a disease first, and a crime second.
Episode 10: Heavy Is the Head
Jamie and Eddie ask Erin to drop old charges against a man who bravely rescued a woman from a local hostage situation. Danny and Baez work a case involving car thieves and discover the leader is a mobster they've dealt with before.