With an assist from NYPD's Maria Baez (Marisa Ramirez), Danny and Lena hunt down a serial home invader. Sean's budding romance faces unexpected complications.

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

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.

A body found on the Boston wharf pulls Lena and Danny into a tense drug investigation alongside Lena’s former partner, Detective Brian Rodgers (Ryan Broussard), 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.

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.

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.