Danny consults a psychic to solve the murder of a young boy. Frank is at odds with the mayor over how best to protect the city from an uptick in crime following a high-profile shooting. Erin investigates a decades-old case.

Jamie and Joe search for an undocumented teenage girl who has been sex-trafficked. A woman in witness protection is murdered. Frank calls out the District Attorney's office for instituting a new rule that classifies armed robbery as a misdemeanor.

Danny partners once more with Texas Ranger Waylon Gates to deliver an infamous drug cartel boss to arraignment, but the mission becomes complicated when the criminal threatens to harm the Reagans. Erin takes on a highly contentious assault case.

Danny and Baez investigate a case of grand larceny tied to feuding crime families. Frank clashes with Mayor Chase when an influx of immigrants arrive in the city. Erin questions whether her district attorney campaign is compromising her day job.

Danny and Baez team up with Danny's old partner to find a copycat killer. Frank and Mayor Chase battle over how best to handle the city's rising homeless population.