The CBS police procedural, Blue Bloods, was a popular series for the network. The series ran for 14 seasons, and fans were sorely disappointed when it was canceled. But similar to The Walking Dead spinoffs, Blue Bloods' Detective Danny Reagan (Donnie Wahlberg) will return in a spinoff series in October.
Titled Boston Blue, the series follows Danny Reagan's journey, leaving the NYPD for the Boston Police Department. His partner, Lena Silver, will be portrayed by TWD's Sonequa Martin-Green, who portrayed Sasha from season 3 until her death in season 7. Lena is the eldest daughter of an esteemed Boston police family, which includes her mother, Mae Silver (Gloria Reuben), District Attorney for Boston, Lena's stepsister, Superintendent Sarah Silver (Maggie Lawson), and rookie cop Jonah Silver, Lena's brother and Mae's son. Ernie Hudson rounds out the family as Lena's grandfather, Reverend Edwin Peters.
The new series will also feature Danny's son Sean (Mika Amonsen), previously portrayed by Andrew Terraciano in Blue Bloods, who relocated to Boston to begin a new chapter in his family's legacy, on his own terms.

Boston Blue expands the Blue Bloods universe, following the professional and personal lives of the Reagan and Silver families. The series' first episode, "Faith and Family," finds Reagan and Silver investigating a deadly fire at a tech company. They discover a vast network of secrets involving facial recognition technology, family ties, and a search for justice that unites the two families.
Boston Blue will premiere on CBS on October 17 at 10/9c with episodes available the next day on Paramount+ (live and on-demand) for Paramount+ Premium plan subscribers, or on-demand for Paramount+ Essential subscribers.
Walking Dead fans will always fondly remember Martin-Green's portrayal of Sasha, sister to Tyreese (Chad L. Coleman), who sacrificed herself in an attempt to save her group. Star Trek fans remember her as Captain Michael Burnham in Star Trek: Discovery, which aired for five seasons on Paramount+.
The actress also has credits for roles in Once Upon a Time, New Girl, My Dead Friend Zoe, Space Jam: A New Legacy, Accused, and more. She will also be seen in Rick Gomez's directorial debut dramedy She Dances, which also stars Ethan Hawke, Mackenzie Ziegler, Rosemarie DeWitt and Audrey Zahn.
On November 7, Martin-Green will be joined by fellow TWDU actors, her husband, Kenric Green, and Garret Dillahunt in a biographical drama film regarding Sarah Rector, Sarah's Oil.