Blue Bloods' viewers are finally getting an explanation for why Donnie Wahlberg’s character, Danny, moved in the 'Boston Blue' spinoff

A familiar face will be paying Danny Reagan a visit in the Blue Bloods offshoot Boston Blue. In the new series, Donnie Wahlberg reprises his role as NYPD Officer Danny Reagan as he makes the move to the Boston Police Department,

Boston Blue star Donnie Wahlberg has confirmed the first returning major Reagan family member for a cameo for the anticipated Blue Bloods spinoff.