Blue Bloods’ Star Andrew Terraciano Opens Up About Being Recast on ‘Boston Blue’ Spinoff
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Andrew Terraciano, known for his role as Sean Reagan on the hit TV series ‘Blue Bloods’, has recently shared his experience of being recast in the show’s spinoff, ‘Boston Blue’. The spinoff, which premiered in October 2025, saw actor Mika Amonsen stepping into the shoes of Sean Reagan, now working as an officer in the Boston Police Department.
Terraciano, who portrayed Danny Reagan’s son Sean on ‘Blue Bloods’ from 2010 until its finale in 2024, was not part of the cast when ‘Boston Blue’ made its debut on CBS. Instead, the role was taken over by Amonsen. Terraciano, now 22, received the news of his recasting on the day of his graduation, with his mother breaking it to him over a phone call. He shared that the news was delivered to him by someone on the team, followed by a call from Donnie Wahlberg, expressing his support and respect.
Reflecting on his time portraying Sean on ‘Blue Bloods’, Terraciano described the role as “beautiful”, emphasizing the significance of every line and moment he got to embody the character. He conveyed his belief that another actor taking on the role doesn’t diminish the value of his portrayal, expressing joy in having the opportunity to bring Sean to life and now witnessing someone else do the same.
Terraciano expressed his close bond with Wahlberg, who leads the cast of ‘Boston Blue’, referring to him as both a friend and family. He reassured Wahlberg that he would be there for him, not just in the realm of the show but in any aspect of life. Despite the shift in the cast and the outpouring of reactions following the recasting, Terraciano felt grateful for the love and support he received from fans, underscoring the impact of the character he helped create.
In the months leading up to the confirmed recasting news, a co-showrunner of ‘Boston Blue’ explained the decision, stating that the change was necessary to explore new narratives within the characters’ lives. The shift, according to Brandon Margolis, allowed for a fresh perspective on the relationship dynamics and presented an opportunity to delve into different storylines while maintaining the essence of the character.
Amonsen, the actor now portraying Sean on ‘Boston Blue’, acknowledged the mixed reactions to the recasting but highlighted his commitment to honouring the character’s legacy. He expressed his desire to stay true to the foundations laid by Terraciano while adding his own interpretation to the role. Amonsen shared his quick transition into the role and his focus on understanding Sean’s journey into adulthood and his evolving connection with Danny Reagan.
‘Boston Blue’ continues to air on Fridays at 10 p.m. ET on CBS, with episodes available for on-demand streaming via Paramount+. The development of Sean’s character under the portrayal of Amonsen has brought a fresh perspective to the show, capturing the attention of viewers and offering a new dynamic to the familiar narrative.
The recasting of Andrew Terraciano’s character, Sean Reagan, has sparked discussions among fans and critics alike, underscoring the impact of character portrayal in the world of television and the dynamic nature of storytelling. The evolution of characters and the infusion of new energy into established roles serve as testaments to the ever-changing landscape of television drama and the continuous exploration of characters’ journeys.