‘Boston Blue’ Recasts Danny’s Son: Mika Amonsen Joins as Sean in Series Regular Role
The Reagan family in the new Blue Bloods universe series this fall, Boston Blue, is going to look a bit different: one of Danny’s (Donnie Wahlberg) sons has been recast.
Mika Amonsen has joined the cast in the series regular role of Sean Reagan, CBS announced on Wednesday, July 9. Throughout the 14 seasons of Blue Bloods, through the series finale, the character was played by Andrew Terraciano.
For the new offshoot, Danny’s youngest son has relocated to Boston to start a new chapter as a Boston PD patrolman. Sean committed himself to pursuing his family’s legacy but wanted to do so on his own terms, which meant joining a department outside of his hometown. Danny’s decision to stay in Boston gives this father and son duo a chance to reconnect on a deeper level.
Boston Blue is a universe expansion of CBS’ long-running top drama and is taking over Blue Bloods‘ former time slot, Fridays at 10/9c this fall. In this new drama, Wahlberg reprises his role as NYPD Detective Danny Reagan as he takes a position with the Boston PD. Once in Boston, he is paired with Detective Lena Silver (Sonequa Martin-Green), the eldest daughter of a prominent law enforcement family.
The news of this recasting comes just two days after Wahlberg posted a photo from the table read for the series’ premiere on Instagram. Pictured was the pilot script’s cover page, along with “A new chapter” and a blue heart.
In addition to Wahlberg as Detective Danny Reagan, Martin-Green as Lena Silver, and Amonsen as Sean Reagan, Boston Blue also stars Maggie Lawson as Sarah Silver, Marcus Scribner as Jonah Silver, Gloria Reuben as Mae Silver, and Ernie Hudson as Reverend Peters.
Boston Blue is produced by CBS Studios in association with Jerry Bruckheimer Television. Brandon Sonnier and Brandon Margolis are showrunners and executive producers. Jerry Bruckheimer, KristieAnne Reed, and Wahlberg also serve as executive producers.
Boston Blue, Series Premiere, Fall 2025, Fridays, 10/9c, CBS
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Unless Andrew Terraciano decided he no longer wanted to portray Sean, there is no reason to change actors. They are not being true to the original! They should have left the show as Blue Bloods, with occasional appearances by Tom Selleck (if he didn't want to stay on full time), instead of trying to reinvent a show that has been a staple for years and still beloved by its many fans. Once again, I have to question the moves being made at CBS, whether for financial or other reasons, on popular shows!
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It is cheaper to start a new show than continue Blue Bloods because they can redo contracts and make it more cheaply than Blue Bloods, which has been on 15 years. It is all about money. It is called show business after all.
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Yes, it is a business, but other shows still survive like NCIS and Law & Order SVU. I realize they are the exception rather than the rule but that doesn't account for the integrity lost for the show when an actor is replaced but not the character unless the original actor has opted out. They could have just left Sean out of the new show. This is an insult to the loyal fans of Blue Bloods, but that is generally the case when money is involved!
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Do you think the original actor added that much to Blue Bloods? I truly don't.
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I think the original actor was good in the role. He was not cast as a major figure, but he fit the role well that he was written to play. Now, based on the article, it seems they want to increase his role. That's fine but keep the original actor instead of going in a different direction than what the show defined in the past 14 seasons as he has evolved.
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14 years!
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Also they're filming in Canada which is a lot cheaper. Everything is money nowadays.
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Andrew was annoying as heck...
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I agree that CBS has made some bad decisions with the excuse of finances. They have cancelled S.W.A.T., The Equalizer & Blue Bloods. All are quality with great actors & chemistry amongst the casts. You get quality because you get what you pay for. You don’t cancel for cheaper, low quality shows.
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Okay. How do you want to PAY for it? This was the problem. The cast had already agreed to take pay cuts the last season…..eventually you have to give that money back. It was never about content or commitment on the part of the actors. Another reason was it “didn’t fit” the modern collective of society. They only tried to do a LBGTQ character one time and though it was a good story line, the audience didn’t like it at all ( the detective in Danny’s squad was a gay man who stopped a robbery but didn’t want his name out there because he feared retaliation from his partner….and he was right…). They had one episode and never went back. Who do you think was offended?
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With all due respect, I'm not sure what your point is. If you want a quality show you need to budget for that or don't do the show. However, what this article is really about is a change in actors which I disagree with. If you don't want the original actor, or he doesn't want to continue in the role, then just write him out of the script instead of replacing him with someone new as the same character. That's just my take on the whole thing.
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He left the original and didn't appear in any episodes until the final when they were all together so maybe he didn't want to do it?
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Neither son was ever a main cog in the program except during Sunday dinner, but I thought they both added to the show. If he didn't want to appear in the spinoff so be it, but then just let the character fade away into the distance. No reason to replace the character with another actor any more than it would be to replace the other characters with new actors. Just my thought as a loyal fan all these years.
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Well some actors that have been acting since young age want a change maybe normal lives, college! This might be a factor or maybe he wants to do something entirely different. Whatever hopefully it’s his choice & not the producers or someone else’s!
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You might be right and if he wants a change I wish him well. However, I don't see the need to add a new actor as a replacement. Just let the character be written out.
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The character is suppose to become a policeman he probably was changed because of his weight
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If that is the case, I don't find that to be a valid reason to switch actors. This show has grown up with the character being whom he is both physically and mentally. Now we're asked to make a dramatic change at this stage of the game to bolster another story line for the same character. I don't like the direction this is headed after all these years for the same character. To me, it blurs the story line. Others may feel different, but for me this doesn't work.
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They should have used the original actor. Unfortunately people judge by appearances Which is really sad and unnecessary When the original actor would have portrayed the character that was more realistic to real life. Instead of bringing a young man into the role that look more like a model.
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Think of it as Sean worked out and got fit to be a cop.
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I don't understand why Blue Bloods could not continue. It was a great show." I agree, if something isn't broken, don't try and fix it". TBH,
Not feeling it for this Boston Blue. 😗
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Most likely money. Anytime there are money issues, they cancel shows. The actors took a pay cut, but obviously that wasn't enough.
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I am sad too but…Tom Selleck is 80 and commuted from his ranch out west to NYC constantly…given that the new show hasn’t even started yet??we need to give Boston Blue a chance
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As much as I like the entire cast (a rarity for me) of Blue Bloods, I'm not liking what I've been reading about Boston Blue.
And, this latest recast of a well known actor, just detracts it even more.
Tbh, I don't if I'll even bother watching it.
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He was not a well known actor, he had a very small supporting role.
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It doesn't matter. He's been on since a child and originated the part. It should still ve his! Actors don't give a crap about viewers.
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I agree
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Then don't. It sounds like your opinion will not be missed
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Why didn't they renew Blue Bloods, instead of doing Boston Blue? If it's not broken, don't fix it.
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Money money money. All they care about at CBS. Couldn't care less about anything else when they started paying them a lot less from Season 13 on.
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The actors of Blue Bloods ALLLL took a cut in pay to continue the show so it wouldn't be canceled! It SUCKS they took it off anyway! NO ONE likes character change on a show as long running as Blue Bloods was I don't have high hopes for Boston Blue.
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Because Blue Bloods had a table full of veteran actors who all commanded high salaries (and getting higher every contract cycle). It was getting too expensive to produce.
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I agree with everyone..why fix something that is not broken..I loved Blue Bloods especially the Sunday Dinners they had..something families don't do anymore(not leaving myself out)also I liked how they had disagreement & got mad with one another but one of them would go to the other one & they would reason it out..just like the Bible say..I also like the love they had for each other & how they had each other's back..it was a show that had family values..I love that show..I guess I will be watching reruns too..also I don't think the part of Sean should be recasted either🥰🙏🏿🙏❤️💚🎀
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Blue Bloods was an exceptional show. It probably did have a couple more years left. But people need to understand that show business is a business. And it had gotten to the point where the characters all were making such money that it was not worth the return on investment for those that are putting out the money. The quality of the show had still maintained a very high bar but it's not the basis for a show to continue. Just because it's good. It has to be good and making the amount of money that the production company wanted. Not needed mind you. But wanted. I'm glad to show went out on top though. Too often a show continues long after the riding has gone down and the actors are no longer acting as if they want to be there.
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Well, that pretty much cinched it for me. Guess I'll just have to be happy watching Blue Bloods reruns. CBS you killed a great show, just let it go...Boston Blue is not going to fix your mistake!
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And now I have NO interest in watching this!
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Because a minor character has been replaced?
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We will hold judgement on new show until we’ve watched few episodes. We really like him in most things we’ve seen him in. I’m not judging just because CBS canned Blue Bloods he had no say in!
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I love Tom Selleck but he's up in years and in severe pain from
Arthritis. I've heard it's been debilitating for him. My dad was as tall and built almost the same and he suffered with the pain of arthritis.
They can't work forever. I will miss the real Sean but he's young and wants to live his life. Good for him. I will miss
all the originals and hope to see them all in future episodes.
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What I read Tom Selleck Wanted the series to continue! He didn’t want it to end. Know he’s issues it’s why you don’t see him in action anymore why’s seated mostly.CBS isn’t making decisions to cut all our shows IMO it’s coming frm gov!
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My husband and I have been VERY disappointed that CBS canceled Blue Bloods which has been and still is our FAVORITE to this day. I was really hoping, especially since Donny kept dropping hints, that there would be at least some interactions between "Danny" and the others in the original family since there was such chemistry between the actors and the final Blue Bloods show left soo much yet undeveloped, but in light of this actor change I dont believe this will happen. We loved "Danny" but I think the changes will put to death the Reagan story line. I'm done
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We’re very disappointed CBS caved into canceling Blu Bloods & others! Big fans! If they had to do it they should have ended it better given us some closure as to why all changes were happening! I’m not happy how they ended things at all. Tom Selleck is too good to be treated like that. Huge fan! The entire family was great. It’s wrong how they did this!
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Absolutely agree. None of them deserved it, but Tom is an icon whose opinion was tossed aside along with everyone else's. CBS can kick rocks.
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I love Donnie but sure wish he'd have told CBS no. They completely ignored the fans and the cast and everybody that worked on that show, so they don't deserve to have the new show be a success. I was done with CBS when it became official they non-renewed Blue Bloods. And as much as I love Donnie, I won't be watching. I would rather watch Blue Bloods beginning to end all over again than watch a spinoff. Had the show run its course and people been ready to live on to other things, I would have gladly watched a spinoff.
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Danny has an established carrer in the NYPD, family on the job and two kids, one of which is in college in the NYC area. His ties to NYC mean something earth shattering has to change for him to want to give thatall up. Recasting characters happens all the time as the orginal actors can be wither unable or unwilling to come back. I question how this show will move someone who is a committed New Yorker with an established seniority to another department in another state.
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Well people do move all the time for better opportunities so it’s really that unusual. If Frank’s job as commissioner was gone as was looking that way he had every right to move forward as were his brother & wife looking to moving out of NY which could have led to another job for them as well. People move things change! It’s life!
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Jamie and Eddie weren't necessarily looking to move out of NYC, but they were ready to start a family. As per the series final. It wasn't in Danny's nature give up the NYPD and NY in general and the Sunday family dinners, visiting his wife's grave. Something really big had to happen to push him to leave, and practically start over in another department.
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Why recast his son? Is the actor the mature version of his son or something.
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Also I'd like to see them bring Danny's partner Det. Bias...
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Me too as long as the actress that plays her be there to continue to play as her
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Once the script brought Danny’s wife’s character to her demise, I found myself less interested in watching. The dialogue eventually teased that a romantic relationship between Danny and his partner Ms. Diaz might develop, I wondered how that could happen, as I failed to detect any chemistry between the two. Watching the first season again, I couldn’t believe the difference in the energy of all of the characters. That, too, explained my waning interest. I haven’t seen any reason listed for choosing a new actor to play Danny’s son so I don’t want to jump to conclusions about why the previous actor is no longer going to play the part. Overall, I was ready for Blue Bloods to come to an end and am willing to give the new show a chance.
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Andrew Terraciano should not have been replaced as Danny's son. This is not staying true to Bluebloods it is just trying to replace it and unfortunately BLUEBLOODS CAN NOT BE REPLACED. I will not be watching even though I love Donnie it just won't interest me. Bring Bluebloods back
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Im assuming Andrew wasn't interested in acting, I hope that's the only reason he was recasted. Not thrilled about the casting so far.
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I'll watch the first few Episodes. Like most people I'm not thrilled with a Different Actor playing the youngest Son. Maybe he had a prior commitment and couldn't get out of the contract. I'll give it a chance. Maybe it'll be a good show. Who knows.
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I love that Kid keep Sean
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I think they should still have Andrew Terraciano as Sean. No need to change. Unless Andrew had other plans.
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Blue Bloods was my favorite show all these years. I loved every character.
I will NOT watch this show, as it is nothing like the original with Tom Selleck at the helm.
Furthermore, to replace an actor that has been part of all seasons is a slap in the face.
I am done.
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Andrew doesn't have the look for the show
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I was so disappointed in the cancellation of Blue Bloods that I couldn't bring myself to even watch the last 2 episodes.. It would have just intensified the feeling of loss of an excellent series 😥
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Sorry but I think it stinks.
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It's possible the original actor was not available.
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I suppose, but again not very realistic.Many of the police officers in my area, don't look like models and could afford to lose a few pounds but are still are able to do their jobs very well.
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Why are they cutting all the good shows?I mean, I watched them every week: Blue Bloods, The Equalizer, S.W.A.T., Magnum P.I.The James Cordon Show, and Ellen. CBS cancelled James Cordon and replaced it with comedy shows I don't like. They cancelled Ellen and replaced it with EXTRA and old Jeopardy episodes. CBS plans on cancelling the Steven Colbert Show, which I love. I wonder what horrible show they'll replace it with!
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I was disappointed when Blue Bloods was cancelled. But I have watched the first two episodes and I have enjoyed it. I will be watching Boston Blue.
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why didn't they bring Andrew onto the new show it just won't be the same!!
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Just another reason not to watch Boston Blue. Canceling Blue Bloods was a stupid move on CBS part, as was canceling NCIS Los Angeles. It's going to come back to bite them in the ass. If they wanted a new vehicle for Ernie hudson, a fine actor, they could have written him a permanent part in Blue Bloods. The entire cast wanted to continue to do the show. Fans wanted them to continue to do the show. I would love to see Blue Bloods jump to another Network and give CBS the finger
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I think this entire Boston thing is just stupid. I was always a big Bluebloods fan but I will Not watch this Boston Nonsense. ☹️
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I have no idea why they're even going to bother calling Wahlberg's character Danny Reagan.
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Not sure why. His character added very little to the show. Doesn't make sense except maybe as occasional guest appearance as son visiting for holidays.
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I want the other actor who played Sean to be on Boston Blue because it's the right thing to do.we all have grown to like him he's amazing and fits the part of Sean Reagan so very well
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Well that sucks!
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I'm not watching it at all they should have never took it off the air and now they're redoing the reboot of it and changing the characters. No way will I watch it at all and I loved Danny reagan. Can't do it
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he got too fat
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Can’t believe Andrew is not continuing in his role as Danny Reagan’s son. I truly hope it was Andrews decision to stop being a Reagan and any producers or directors
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I don't understand why they cancelled Blue Bloods, when it was said all the actors would have kept going!
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All because of not enough race in original Blue Bloods...
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He is a young man and might want to do something different. His brother, I read left to go to college in real life. Was it a program decision or a personal decision?
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I think they lied to get a new show they promised would be true to the original blue bloods then go recasting original characters with new people and it hasn't even started yet!!! This is normal!!! Break it before it begins!!! So disappointed 😞!!!!
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Hollywood Politics.
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Woke casting equals no thanks.
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The part of Sean was almost an afterthought in any episode. The young man really didn’t have any discernible acting ability. Who knew when the series began that the part of the adorable little boy would need to morph to an actual actor? If the intention was to expand the role, they really needed a performer who could do more than recite an occasional response at the dinner table,
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Too fat? Like Wahlberg is such a hunk. 🙄
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