Liaison

Gabriel accepts a mission to withdraw two Syrian hackers. Alison and Banks face escalating cyberattacks in London.

Gabriel tells Alison the hackers are the key to stopping the terror attacks. A further cyber-attack occurs in London - this time with civilian causalities.

Gabriel tracks down Myriam but he's not the only one on the Syrians' trail. Alison heads to Brussels to secure an EU cyber deal.

Pressure mounts for Banks as another attack unfolds. Alison and Gabriel seek safety.

Dumas informs Sophie Saint Roch of Taraud's plans. Alison and Gabriel head to London with Samir. Alison's devastating secret is revealed.

Series finale. Alison and Gabriel face new danger as everything converges at Antropa's London headquarters.