When a prominent French politician is found dead on the border between the UK and France, detectives Karl Roebuck and Elise Wassermann are sent to investigate on behalf of their respective countries. However, the case takes a surreal turn when a shocking discovery is made at the crime scene, forcing the French and British police into an uneasy partnership. As the serial hugger uses ever more elaborate and ingenious methods to highlight the moral bankruptcy of modern society, Karl and Elise are drawn deeper into his increasingly personal agenda.
The Tunnel Ended after Season 3
Sky Atlantic aired the final episode on Thursday 18th January 2018