‘I Was Really Thrown Into It’: Boston Blue’s Sean Actor On Taking Over The Role Post-Blue Bloods, And How He Prepared

Taking Over the Role of Sean

When it was revealed that Amonsen would portray Sean in Boston Blue, many fans were surprised. Andrew Terraciano had previously played Sean Reagan in Blue Bloods, and his departure marked the end of an era for longtime viewers. Amonsen stepped into the role soon after, facing both excitement and pressure.

"I was really thrown into it," Amonsen shared during an interview. "Everything happened so fast, but the cast and crew made it easier to settle into Sean’s world."

Preparation and Approach

Amonsen explained that preparing for the role involved studying past episodes of Blue Bloods to understand Sean’s family background and personality. However, he also wanted to make the character his own.

“I didn’t want to copy Andrew’s version,” he said. “I wanted to show who Sean becomes as he grows older and faces new challenges.”

Post-Blue Bloods Transition

The transition from Blue Bloods to Boston Blue aims to keep the Reagan family legacy alive while introducing a broader story centered around Sean’s experiences. The new show explores his life as a young detective balancing duty, family, and identity. For Amonsen, this role is both a challenge and an opportunity to expand his acting range.

“It feels like a continuation, but also a new beginning,” he reflected.

Author Summary: Amonsen discusses stepping into Sean’s role for Boston Blue, sharing how he prepared to honor the character’s legacy while shaping a fresh perspective for the new series.

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