Frank battles with City Council speaker Regina Thomas over protests against police brutality; Jamie and his nephew, Joe Hill, try to locate a missing Danny and Baez; Eddie helps an abrasive woman find her father's body.

Danny and Jamie combine forces to convict a notorious drug lord; Erin nervously awaits the governor's selection for the new district attorney; Frank and his grandson face a difficult decision as they navigate their new and complicated family ties.

Frank struggles after Joe Hill's lineage as a Reagan is revealed; Erin and Anthony receive gift-wrapped evidence; Danny's opposition to authority clashes with Jamie's adherence to the rules, as both brothers work to solve a murder.

Erin is conflicted by the weight of her authority in the sentencing of a man who is guilty of vehicular homicide; Danny and Baez pursue a rideshare rapist; Jamie and Eddie team up to aid a fellow officer when his partner is shot on the job.

Eddie and her partner, Officer Rachel Witten, are heralded for their bravery for stopping an active shooter, until a civilian comes forward to accuse them of faking the incident as part of a government conspiracy.

Frank deals with a police captain who's losing his grip over his precinct; Danny faces backlash after a tough call he made in the field; Erin weighs the consequences of a dangerous criminal's release under new bail laws.

After Danny witnesses a drive-by shooting, he butts heads with the detective assigned to the case; a childhood friend of Jamie's is convinced that she has single-handedly solved a cold case murder.

Erin tries not to feel overpowered as her new boss shadows her at work just as she's trying to get a nervous eyewitness to reveal the identity of who shot her boyfriend; Jaime arrests an intrusive reporter who appears at a series of store lootings.

Baez confides in Danny and asks for his help in proving her innocence after she finds a corpse in her front yard; Erin struggles to find a peaceful solution when she receives harsh case notes from her boss.

Frank asks Erin to help with policy reform he privately backs but can't publicly support; Danny and Baez become enmeshed in the world of competitive gaming when a high-profile video game streamer is murdered.