Blue Bloods “The Devil You Know” – 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, on BLUE BLOODS, Friday, May 4 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Bebe Neuwirth returns as Councilwoman Kelly Peterson. BLUE BLOODS Season 8 Episode 21 Photos The Devil You Know.
BLUE BLOODS is a drama about a multi-generational family of cops dedicated to New York City law enforcement. Frank Reagan is the New York Police Commissioner, and heads both the police force and the Reagan brood. He runs his department as diplomatically as he runs his family, even when dealing with the politics that plagued his unapologetically bold father, Henry, during his stint as Chief. A source of pride and concern for Frank is his eldest son, Danny, a seasoned detective, family man and Iraq War vet who on occasion uses dubious tactics to solve cases with his partner, Detective Maria Baez. The Reagan women in the family include Erin, a New York Assistant D.A. who also serves as the legal compass for her siblings and father, as well as a single parent to her teenage daughter, Nicky. Jamie is the youngest Reagan, a Harvard Law graduate and the family’s “golden boy.” Unable to deny the family tradition, Jamie decided to give up a lucrative future in law and follow in the family footsteps as a cop. He’s found a friend and ally in Eddie, his young and eager female partner, who keeps him on his toes, but has very different reasons than the Reagans for joining the police force.