Frank's esteem for an old friend proves to be a mistake; Jamie asks Erin for help apprehending a perp who shot at him after learning she chose not to send him to prison six months ago; Eddie clashes with her new boss.

The episode was rated 7.74 from 609 votes.

Erin disagrees with a psychiatric consultant's diagnosis of a nanny accused of abuse; Eddie confronts her boss; Frank is forced to make staffing changes he is skeptical about; a woman claims she heard someone plotting a murder.

The episode was rated 7.75 from 544 votes.

Frank works to vindicate Detective Douglas McKenzie, a detective accused of using excessive force. Also, Danny and Baez track down the killer responsible for the death of a rapper’s bodyguard. Jamie is skeptical about a relationship between Espinoza and a new rookie officer, Sarah Brooks; and Eddie goes undercover to help Erin investigate a mysterious cult.

The episode was rated 7.75 from 611 votes.

Danny and Baez are faced with tracking down a drug dealer after two young models are found dead from an overdose. Also, Eddie and Jamie team up to determine who the mastermind is behind a robbery.

The episode was rated 7.77 from 511 votes.

Erin and Anthony trust a sociopath who claims he has evidence to convict a murderer; Frank faces backlash from his department when he suspends an officer for violent behavior; Danny and Baez try to arrest a notorious gangster.

The episode was rated 7.78 from 517 votes.

Frank and Garrett devise a plan to convince Mayor Chase to work better with others in order to properly run the city, and Danny and Baez try to track down a perp who vandalized several NYPD vehicles with anti-cop graffiti and made threats against officers. Also, Erin is shaken after she's in a car accident, and Eddie and Jamie argue about whether they should keep a stray dog who leads them to a crime scene.

The episode was rated 7.78 from 499 votes.

Frank must uncover the truth when an undercover officer accuses a fellow cop of police brutality. Also, Danny and Baez investigate the murder of a famous photographer recently accused of assault by his former models, and Erin struggles to protect a witness as new justice reform laws go into effect.

The episode was rated 7.78 from 527 votes.

While Henry works as an investigative consultant for child services, he and Danny butt heads over a case involving a man who is volatile toward his wife. Frank is caught in the middle of an ongoing battle between the NYPD and the FDNY. Erin ponders a life-changing opportunity presented to her by Mayor Peter Chase. Jamie is suspicious about an investigation targeting Eddie's partner.

The episode was rated 7.80 from 525 votes.

Jamie is under investigation after his police vest is found on a perp. Frank debates whether to aid and protect an old friend whose home was invaded. Danny and Baez investigate the suspicious circumstances surrounding the death of a hotel employee believed to be a suicide. Erin asks Anthony to make a deal with a man who knows secrets about the current D.A.

The episode was rated 7.80 from 542 votes.

Frank and Erin are at odds when Frank learns the D.A.’s office keeps a list of “unreliable” cops. Also, Danny and Baez recruit retired mobster Vincent Rella to assist in an investigation, and Jamie participates in a decoy operation to take down a predator posing as a ride-share driver.

The episode was rated 7.81 from 639 votes.

Jamie and Frank oppose each other's viewpoints over the public's treatment of cops after rowdy teens pour water on two rookies. Danny and Baez investigate a man who preys on the elderly. Erin is forced to admit her wrongdoings.

The episode was rated 7.81 from 572 votes.

Danny and Baez grapple with a homicide investigation brought to their attention by Maggie, the medium who previously helped them solve a case; Frank looks for a way to help his ex-partner Lenny Ross when Lenny's daughter gets arrested.

The episode was rated 7.84 from 677 votes.

In the intense "Fog of War" episode of Blue Bloods, Danny and Baez join forces with Texas Ranger Waylon Gates to track down the notorious Lone Star Killer. As they dive into the case, tensions run high and the hunt for the elusive killer takes unexpected twists and turns, keeping viewers on the edge of their seats.

Meanwhile, a shocking incident involving Eddie's partner, Officer James Addison, unfolds, leading to accusations from internal affairs against Jamie for failing to properly supervise the situation. The episode delves into the complexities of police work, exploring the consequences of split-second decisions and the impact they can have on both officers and the community they serve.

As the drama unfolds, Frank finds himself in a tough spot as he confronts Officer Addison about the repercussions of his actions and urges him not to give up his shield. The episode skillfully weaves together multiple storylines, showcasing the intricate dynamics within the Reagan family and the challenges they face both on and off the job. "Fog of War" is a gripping installment that highlights the high stakes of police work and the unwavering dedication of those who protect and serve.

The episode was rated 7.89 from 565 votes.

In the heart-wrenching episode of Blue Bloods titled "Where the Truth Lies," Commissioner Frank Reagan finds himself facing a distraught widow who holds him responsible for her husband's tragic suicide. As tensions rise, viewers are taken on an emotional rollercoaster as Frank navigates through guilt and grief, highlighting the complexities of his role not just as a law enforcer, but as a compassionate human being.

Meanwhile, Officer Eddie Janko's intuition kicks into high gear as she follows her gut feeling about a murder case, showcasing her sharp investigative skills and unwavering dedication to seeking justice. With each clue unraveled, the suspense builds, keeping audiences on the edge of their seats as Eddie delves deeper into the twisted web of lies and deceit surrounding the crime.

On another front, the episode delves into the tumultuous life of Luis Delgado, a character desperate for protection for his sons. As the story unfolds, viewers are drawn into a world of moral ambiguity and tough decisions, where the line between right and wrong blurs, leaving everyone questioning where their loyalties truly lie. With poignant dialogue and intense moments, "Where the Truth Lies" offers a compelling narrative that delves into the intricate dynamics of family, duty, and the pursuit of truth in the face of adversity.

The episode was rated 7.90 from 553 votes.

In the gripping episode "Family Secrets" of Blue Bloods, Sean Reagan finds himself embroiled in a familial mystery after a surprising match on a DNA network. As he delves into detective work to uncover the identity of this unknown relative, viewers are taken on a thrilling journey alongside him. The tension rises as Sean's investigation leads him down unexpected paths, raising questions about his own family's past.

Meanwhile, Police Commissioner Frank Reagan faces a personal request that tugs at the heartstrings. A mother reaches out to Frank, seeking to transfer her son to a safer assignment. This emotional plea adds a layer of complexity to Frank's duties, highlighting the delicate balance between duty and compassion in his role. As the episode unfolds, viewers are drawn into Frank's moral dilemma, wondering how he will navigate this challenging situation.

As the season finale unfolds, the Reagan family faces multiple crises on different fronts. Danny delves into the murky waters of a key witness's murder in one of Erin's cases, uncovering layers of deceit and danger. Simultaneously, Eddie and Jamie are confronted with a life-changing decision when they discover a newborn left outside their precinct, sparking discussions about their own future as a couple. With each twist and turn, "Family Secrets" keeps viewers on the edge of their seats, blending personal drama with professional intrigue in the signature style of Blue Bloods.

The episode was rated 8.08 from 504 votes.