NYPD detective Danny Reagan teams up with Boston detective Lena Silver to investigate a deadly fire at a tech company. As they dig deeper, they uncover a complex web of secrets involving facial recognition technology, family ties and a search for justice that brings the Silver and Reagan families closer together.

Lena and Danny are pulled into a high-stakes murder investigation when a whistleblower tied to one of Mae's court cases is found dead.

A body found on the Boston wharf pulls Lena and Danny into a tense drug investigation alongside Lena's former partner, Detective Brian Rodgers, sparking personal and professional friction. Jonah and Sean chase down a missing man tied to a scavenger hunt, while Sarah and Mae navigate emotional challenges at home and in court.

As the Silver family observes Yahrzeit to honor patriarch Ben Silver on the one-year anniversary of his death, Lena and Danny investigate the murder of a beloved shop owner.

Danny and Lena take on a high-stakes murder case that leads to one of Boston's most infamous unsolved crimes.

With an assist from NYPD's Maria Baez, Danny and Lena hunt down a serial home invader. Sean's budding romance faces unexpected complications. Meanwhile Mae and Sarah uncover a troubling leak that could upend the justice system.

Lena's pursuit of justice forces Danny into an unexpected role reversal, while Sarah faces a personal dilemma that tests her resolve. Meanwhile, Mae contends with political pressure.

Danny and Lena’s investigation into a robbery gone wrong quickly turns personal, pushing Lena to devise a bold plan that tests Mae’s boundaries. Meanwhile, Sean and Jonah face rising tensions with Boston’s firefighters, and Sarah clashes with boyfriend Seth over family discipline

Mae faces public and family backlash over the consequences of her past decisions, while Sarah struggles with guilt that pushes her to take risks in pursuit of justice. At the same time, Lena and Danny dive into a tense homicide case, and Jonah's anger over his father's death threatens to unravel fragile family ties.

Following the release of Ben's killer from prison, Jonah continues to struggle with anger and grief confronting the killer and putting family bonds to the test, and Mae and Sarah face painful truths that could change everything. Meanwhile, Danny and Lena take on a high-stakes case that uncovers deep-rooted secrets and forces unlikely alliances.

Danny and Lena race to stop a string of violent crimes before they spiral out of control, while Sarah's family outing takes an unexpected turn.

Danny, Sarah and Lena race to stop a looming threat on St. Patrick's Day. Meanwhile, homesickness sparks a family gathering, and Lena's personal life takes a hopeful turn.

A drive-by shooting at the church pulls Lena and Danny into the complicated past of one of Reverend Peters' associates. Mae faces painful revelations about her family, the team manages internal friction and grandfather Henry comes to visit.

Sean and Jonah go undercover to track down a dangerous new threat affecting Boston's young adults, forcing Sean to confront unresolved ties from his past along the way. Meanwhile, personal revelations and family concerns surface as the team navigates health scares, and growing public attention brings new challenges.

When a Brooklyn homicide leads to a dangerous cross‑city case, Danny and Lena reunite with Danny's former NYPD partner Maria Baez to uncover the truth and protect a vulnerable victim. Meanwhile, separate investigations test personal loyalties and moral boundaries as the team confronts difficult family dynamics.

When a crisis erupts at a local hospital over a critical transplant error, Danny and Lena work to calm a volatile situation while the rest of the team uncovers a darker mystery tied to the case. Meanwhile, an unexpected encounter pushes Lena to reflect on her past.

When a captured serial killer hints at the whereabouts of a missing child, Danny teams up with a familiar ally in a tense race against time. Meanwhile, health scares and long‑kept family secrets surface, forcing members of the team to confront personal truths.

When a college basketball star is threatened, Danny and Lena race to protect them while solving a murder. Meanwhile, deeply personal conflicts and moral dilemmas surface, forcing the team to confront difficult truths about loyalty, identity and justice.

A deadly threat strikes close to home, pulling Lena, Danny and the team into an intense investigation that stirs buried grief and tests their resolve. At the same time, Mae faces a political and personal reckoning, prompting a revelation that pushes Lena toward a life-changing decision.

A dangerous investigation collides with pivotal personal and professional decisions, pushing the team to their limits. As the D.A. election draws closer, shifting dynamics and an unexpected incident heighten the urgency and raise new questions for everyone involved.