Why Was Sean Reagan Recast? Here’s What Happened to Andrew Terraciano
After playing Sean Reagan for nearly 15 years on Blue Bloods, Andrew Terraciano was unexpectedly replaced in the spinoff Boston Blue. The new series, which premiered in October, features Mika Amonsen stepping into the role—leaving many fans wondering what happened.
Terraciano, now 22, appeared in almost 300 episodes of Blue Bloods from 2010 to 2024, becoming a familiar face at the Reagan family table alongside his real-life brother Tony Terraciano. Despite his popularity, creators said the recast was part of a “new chapter” for the story, aiming to bring fresh energy as Sean begins his journey as a police officer.
While fans were surprised, there’s no bad blood. Terraciano has stayed positive, focusing on his studies at New York University, where he’s pursuing a Master’s degree, while continuing to explore acting. He’s already stepped into theater, worked on short films, and says he hopes to keep acting long-term.
Meanwhile, Amonsen has expressed respect for Terraciano’s performance, saying he aimed to honor the original portrayal while bringing his own take to the character.
Though he’s no longer on screen, Andrew Terraciano isn’t stepping away from acting—he’s just starting a new chapter of his own.