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‘Boston Blue’ Shockingly Recasts Danny Reagan's Son Sean Amid Filming


Boston Blue, the Blue Bloods spinoff, recast Sean Reagan, Danny Reagan's son, with Mika Amonsen replacing Andrew Terraciano in a shocking twist

“So excited to carry on the tradition, to share so many surprises, to answer some unanswered questions and to welcome all of you — to #BostonBlue!” Wahlberg wrote via Instagram in March 2025. In addition to Wahlberg and Amonsen, Boston Blue will also star Sonequa Martin-Green, Maggie Lawson, Marcus Scribner, Gloria Reuben and Ernie Hudson. Boston Blue is already generating a lot of buzz before its CBS premiere this fall thanks, in part, to the spinoff series’ all-star cast — and one very popular member of the Reagan family.

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