First Look at Len Cariou's Debut in "Boston Blue" Spin-Off

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Ahead of the "Boston Blue" spin-off's midseason premiere on February 27, CBS has released a new trailer offering the first look at "Blue Bloods" veteran Len Cariou's guest appearance as Henry Reagan. Cariou's character will be seen meeting with Boston District Attorney Mae Silver, played by Gloria Reuben, and her daughter Detective Lena, portrayed by Sonequa Martin-Green.

Why it matters

The highly anticipated "Boston Blue" spin-off is set to expand the "Blue Bloods" universe, and the appearance of the Reagan family patriarch Len Cariou is sure to excite fans of the long-running police drama.

The details

In the new trailer, Len Cariou's Henry Reagan is shown meeting with Donnie Wahlberg's Danny Reagan, as well as the new characters of Boston District Attorney Mae Silver and her daughter, Detective Lena. This crossover event is set to occur in Episode 13 of "Boston Blue", which is scheduled to air in April.

• The "Boston Blue" spin-off's midseason premiere is set for February 27, 2026.
• Len Cariou's guest appearance as Henry Reagan will occur in Episode 13, airing in April 2026.

What’s next

Fans will have to tune in to the midseason premiere of "Boston Blue" on February 27, 2026 to see the full extent of Len Cariou's guest appearance as Henry Reagan.