McCall’s determination to apprehend Mason Quinn, the criminal responsible for Bishop’s death, veers into a dangerous obsession that could cost her everything. Also, Delilah finally meets her mother’s vigilante team when she requires Harry and Mel’s help to prove a fellow classmate made her best friend a victim of revenge porn. Second season finale.

When the mother of a patient dying of a rare brain disease holds a hospital hostage in an attempt to get her daughter a lifesaving surgery, McCall races to resolve the situation peacefully while dealing with pushback from government forces.

After an operative kills all but one of the employees at a marine biology research group, McCall and the team join forces with Colton Fisk when they discover a connection between the murders and a secret CIA program he was involved in.

McCall races to save the team after they're put into extreme danger by her former CIA colleague Michelle Chambers while she discovers the truth behind the CIA withdrawal in Venezuela that led to the death of one of her friends.

After a young girl is struck by a car in an illegal street race, McCall tracks down the person responsible for the hit-and-run. Meanwhile, Dee contemplates the idea of following in her mother's footsteps to join the armed forces.

After Mel is reunited with her brother, McCall helps him blow the whistle on his former unit's unethical practices before it's too late. Aunt Vi and Trish's relationship becomes fractured by Vi's need to protect McCall's true identity.