Erin must convince Frank to back a new state police bill as part of a bargain she made with Governor Mendez. Also, Danny and Baez pursue the same perp twice after the DA's office is unconvinced by their initial lineup, and Frank faces a challenge when a cop killer comes up for parole.

As Jamie and Eddie's wedding day approaches, Frank worries about the toast he'll deliver at their rehearsal dinner. Also, Erin interviews a witness whose story leads her to doubt Eddie's honesty, since she took his initial statement, and Danny and Baez unravel the complicated love life of a young homicide victim.