Erin's ex-husband comes back to town and ends up being opposing council in court on Blue Bloods. "Old Wounds" is the third episode of the show's third season.
Erin discusses giving Nicky more freedom over Sunday's family dinner on Blue Bloods. "Higher Education" is the eighth episode of the show's third season.
Erin and Danny argue when she must release a suspect due to lack of evidence on the season premiere of Blue Bloods. "Unwritten Rules" is the first episode of the show's fourth season.
Things take a dangerous turn at the courthouse when Erin is taken hostage on Blue Bloods. "To Protect and Serve" is the third episode of the show's fourth season.
