Which 'Blue Bloods' Stars Have Reprised Their Roles on 'Boston Blue' So Far?

The moment Boston Blue was greenlit, fans hoped Blue Bloods stars would be crossing over and reuniting with Donnie Wahlberg’s Danny Reagan — but he played coy about how the other Reagans would be featured.

“Now, it’s just Danny going to this new world, but I can’t say a lot about it — but I could say, if he’s a Reagan, it will never be just Danny,” Wahlberg told Fox News Digital in June. “There’ll always be a Reagan a phone call away.”

Blue Bloods ran for 14 seasons on CBS, ending in December 2024. The series followed NYPD Commissioner Frank Reagan (Tom Selleck), and his children, Detective Danny (Wahlberg), ADA Erin (Bridget Moynahan) and officer Jamie (Will Estes), as they navigated family and their jobs in New York City. The series also starred Len Cariou as Frank’s father, former commissioner Henry Reagan, and Franks’ three grandchildren.

Boston Blue, which premiered on Friday, October 17, is focused on Danny as he leaves New York for Boston after his youngest son, Sean (Mika Amonsen), gets injured in a fire. Sean is living in Boston as a police officer after a hiring freeze in New York left him unable to follow in the Reagan family footsteps in the Big Apple.

While Danny is away from the majority of his family, they aren’t far from his mind — or unable to make a cameo on the spinoff.

Boston Blue airs on CBS Fridays at 10 p.m. ET. Scroll down to see which Blue Bloods stars have appeared on Boston Blue so far:

Marisa Ramirez

Ramirez reprised her role as Maria Baez during the season premiere on October 17, but it wasn’t just as Danny’s longtime NYPD partner. After Danny asked Baez out for pizza — to take the next step in their romantic relationship — during the Blue Bloods finale, fans finally learned their fate.

“I thought we said when we stay at my place, we turn our ringers off,” Danny told Baez during the premiere as he entered his bedroom shirtless and Baez sat on his bed wearing an oversized shirt with her bra peeking out.

She quipped, “It’s your phone, smart ass,” before handing her boyfriend his cell. The sexy moment confirmed that Baez and Danny are an item. However, the call informed Danny that Sean was in the hospital in Boston so he left immediately to be by his side.

Bridget Moynahan

After learning that Sean was hurt in a fire and hadn’t woken up at the hospital yet, Moynahan’s Erin Reagan arrived in Boston to be by her brother’s side.

“I’m pretty sure I said nobody needed to come,” Danny told Erin during the October 17 premiere as she put flowers by Sean’s hospital bed. “Since when have I ever listened to you?” Erin replied.

Danny later asked how long his big sister would be in town, to which she said, “I’m here until I know you’re OK.”

Erin kept her word and joined Danny when he attended a Silver family dinner after working alongside Detective Lena Silver (Sonequa Martin-Green) in solving who started the fire that injured Sean.

The episode ended with Erin and Danny having their traditional Reagan Sunday dinner at the hospital before Sean opened his eyes.