Titled "The Last Link," this episode intensifies the chase as the NSA closely monitors Edward Brooks and Taylah Sanders. The duo races against time to locate the final piece of the prime number puzzle, which could either save them or lead to their capture.

With every agency on their trail and trust dwindling, they must navigate through a maze of espionage and betrayal. The episode showcases a blend of high-stakes action and moral dilemmas, culminating in a revelation that changes the course of their mission, testing their partnership and resolve in the face of imminent danger.