The Blue Bloods spinoff Boston Blue was announced soon after the original wrapped, centering on Danny Reagan (Donnie Wahlberg). At first, it looked like Danny would be the only Reagan to appear-but that’s no longer the case.
Recent casting updates revealed that Sean Reagan will return, though with a new actor. Even bigger news: Erin Reagan is set to appear in the first episode. Wahlberg recently teased the reunion with his on-screen sister, sparking fan buzz.
Exactly why Erin shows up in Boston isn’t clear. She may be helping Danny and Sean settle in, or she could bring a case that connects New York and Boston. For now, her role is confirmed only for the premiere.
Why Joe Hill Would’ve Been the Better Choice
While Erin’s cameo is intriguing, Joe Hill would’ve been a far more logical-and exciting-addition. Joe’s complicated relationship with the Reagans only started to settle in the Blue Bloods finale, and his tense dynamic with Danny would bring natural drama to Boston Blue.
Joe’s work with federal agents gives him a built-in reason to show up in Boston, and his clashes with Danny would echo the family tension fans loved. Plus, Sean was the one who introduced Joe to the Reagans, tying their stories together even more.
If Boston Blue wants to capture the family-driven spirit of Blue Bloods, Joe’s return would feel more authentic than Erin’s quick visit.
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