Blue Bloods' 13th season promises a slightly more amped-up and satisfying menu for fans. Erin Reagan, played by Bridget Moynahan, seeks to run for Manhattan DA, campaigning against the current DA's support for booking and then quickly releasing dangerous offenders. Meanwhile, Jamie Reagan, played by Will Estes, is transferred to the Intelligence Unit when a new captain insists he or his wife must leave her precinct. Danny Reagan, played by Donnie Wahlberg, wants to become a better cop who can de-escalate situations without using a gun. In the season opener, NYPD commissioner Frank Reagan, played by Tom Selleck, embarks on a risky late-night walk with Archbishop Kevin Kearns to understand what it's really like out there for the police force.