Intelligence

At GCHQ, junior analyst Joseph Harries admires newly assigned NSA liaison Jerry Bernstein and his assertive American style.

Joseph mistakenly erases the unit's personnel files, forcing everyone to retake qualifying exams... including a polygraph that Jerry tries to control.

When hackers penetrate the NHS network, the team works tirelessly to find the culprit, but Jerry pushes the investigation in an unusual direction.

Jerry urges GCHQ to hire the ingenious hacker responsible for a recent cyberattack, but Joseph becomes jealous of the unit's cool new colleague.

Disappointing revelations about Jerry compel Joseph to reconsider their friendship. A poor evaluation makes Christine rethink her management style.

Stunned at a close friend's betrayal, Jerry commits an accidental crime that leads to an extradition order — until his teammates rally behind him.