The hunt for a CIA agent accused of leaking secrets puts Peter and Rose in the crosshairs of a ruthless intelligence broker and a deadly war criminal.

Coming off the explosive events of Season Two, Night Agent Peter Sutherland is called in to track down a young Treasury Agent who fled to Istanbul with sensitive government intel after killing his boss. This kicks off a sequence of events where Peter investigates a dark money network while avoiding its paid assassins, while putting him on a collision course with a relentless journalist. Working together, they uncover buried secrets and old grudges that threaten to bring the government to its knees -- and get them both killed in the process.