Catherine Curtin

Racial tension rises between the LAPD and the African American community, following the murder of a notable community activist.

Tommy and the LAPD race to find an online `swatter,' a criminal who makes fake 911 calls. As Tommy deploys the department's full resources to the search, the perpetrator threatens to reveal private information about members of the police force.

Tommy and her inner circle fight back against an LAPD and city government conspiracy to have her removed as police chief.

Danny and Baez investigate the murder of a man who killed a mother and son years earlier while he was driving drunk; Anthony is conflicted when Erin asks him to wear a wire to incriminate a friend.

Police chief Kevin Garvey tries to maintain a sense of normalcy in his strained community. Meanwhile, Tom Garvey gravitates toward a cult, and tension in Mapleton escalates.

Bull returns to his childhood home and faces his past in order to help with the defense a young man accused of arson.