Boston Blue finally premiered on CBS in October 2025, and the new spinoff series kicked off the season by bringing back two major characters from Blue Bloods. In the first episode, we saw the return of Bridget Moynahan as Danny’s younger sister, ADA Erin Reagan, as well as Marisa Ramirez as Danny’s former partner at the NYPD, Detective Maria Baez.
In the premiere, Erin travelled to Boston to be there for Danny and her nephew Sean, who was in a coma at the hospital. On the other hand, Maria appeared briefly in the first episode before Danny left for Boston. In the short scene, we learned that Danny and Maria were officially dating. This was great news for Blue Bloods fans who had been waiting for them to get together.
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