Sean and Danny Don’t Have a Believable Father-and-Son Bond
Boston Blue kicked off with Sean getting seriously injured and hospitalized in the series premiere, “Faith and Family,” sparking Danny’s arrival in Boston. Sean had moved to the city to pursue a career in law enforcement because the New York Police Department was dealing with a hiring freeze due to budget cuts, so moving to Boston provided the quickest path for Sean to become a police officer. During the second episode, “Teammates,” Danny boldly decides to relocate to Boston and transfer to the Boston Police Department to give Sean a support system away from home and reconnect with his son. The last two episodes, “Rites of Passage” and “Suffer the Children,” feature more scenes focusing on Danny and Sean’s relationship, and the performances just do not gel together.
The Silver-Peters Family Has a More Genuine Family Dynamic

To give Boston Blue and its cast some credit, the family dynamic does not fail in every area. For comparison, the casting of the Silver-Peters family is spot on, and Sonequa Martin-Green and Maggie Lawson are great in their respective roles as Detective Lena Silver and BPD Superintendent Sarah Silver. Granted, they are stepsisters, but their chemistry is on point, and they present a genuine sisterly bond and familial dynamic onscreen. That is also the case for the other family members, including Gloria Reuben as Boston District Attorney Mae Silver, Marcus Scribner as Jonah Silver, and the legendary Ernie Hudson as Reverend Edwin Peters. The Silvers are a blended family, and the series establishes their relationships well in the first episode, with the actors exceptionally portraying their unique dynamics within the family unit.
Sean Reagan’s Recasting Is Still Confusing
Ultimately, the decision to recast Sean is still a confusing one. Part of the issue is that Terraciano portrayed the character for all fourteen seasons of Blue Bloods, appearing in almost every episode. Viewers literally saw Terraciano grow up before their very eyes, so suddenly switching the character to a new actor is a jarring process.
While speaking to Variety in a recent interview, Boston Blue co-runner Brandon Margolis explained, “We love Andrew and the work he did over the years on Blue Bloods. Really, it came down to we’re telling a new chapter in both of their lives.” Margolis later added, “It felt like there was an organic opportunity to bring in a new performance with a new energy, to help dramatize that change. It is the same character, it’s the same relationship, but it’s also completely different.” While this could be interpreted that Terraciano simply wanted to move on from the role, the change has not been a benefit to the show.

