Boston Blue has found its matriarch in ER vet Gloria Reuben, who has joined CBS’ Blue Bloods spinoff as a series regular, our sister site Deadline reports. In the offshoot, Donnie Wahlberg reprises his role as NYPD Officer Danny Reagan as he makes the move to the Boston Police Department,

Gloria Reuben has joined the growing cast of “Boston Blue,” the “Blue Bloods” spinoff premiering on CBS this fall. She has been cast as Mae Silver, who serves as Boston’s district attorney. The official description for the character reads,