The SRU is called to a local school when a student who has been pushed to his limits by bullies decides to seek justice and brings a gun into the school, and Sgt. Parker must figure out a way to talk the troubled teen down.
Rania's arrival triggers unwanted memories for Bash; Mags can't win her new boss' approval.
Darius recruits Grace, Harris and Liam for a dangerous mission, and Jillian confronts Liam about his secret.
Grace narrowly escapes a deadly assassin and Darius and Liam forge unlikely alliances.
Darius, Grace and Harris join forces to prove the president was murdered. Also, Grace tells Zoe the truth.
