CBS' highly anticipated Blue Bloods spinoff Boston Blue is in the works - but what is there to know about the show so far? Blue Bloods, which premiered in 2010, followed the lives of the Reagan family, many of whom worked for the NYPD. Speculation that Blue Bloods would end started in 2023, when the police procedural was renewed after the cast and producers agreed to take a 25 percent pay cut. Wahlberg exclusively told Us Weekly in April 2023 that he hoped to see Blue Bloods achieve the same level of success as Law and Order: Special Victims Unit.