Special Agents Maggie Bell and OA Zidan rush to track down an active sniper with an elusive motive as the body count continues to rise.

When an alt-right provocateur is murdered after giving a speech at a university in New York City, Maggie and OA investigate the school's more extreme political groups and rely on OA's sister, Amira, a student, for help.

A serial bomber appears to be targeting Wall Street’s elite. Maggie and OA search for a suspect who seems dead-set on revenge, while Dana deals with Spencer Briggs, a cocky profiler brought in to consult on the case.