The Tunnel is a British–French crime drama television series adapted from the 2011 Danish–Swedish crime series The Bridge (Bron/Broen). The series began broadcasting on 16 October 2013 on Sky Atlantic in the UK, and on 11 November 2013 on Canal+ in France. The series stars Stephen Dillane and Clémence Poésy as British and French police detectives Karl Roebuck and Elise Wassermann. The plot follows the two detectives working together to find a serial killer who left the upper half of a French politician and the lower half of a British prostitute in the Channel Tunnel at the midpoint between France and the UK. The killer is nicknamed the "Truth Terrorist" and is on a moral crusade to highlight many social problems, terrorising both countries in the process. As the series progresses, the killer's true intention is revealed.

Stephen John Dillane is a British actor. He is best known for his roles as Leonard Woolf in the 2002 film The Hours, Stannis Baratheon in the HBO fantasy series Game of Thrones (2012–2015) and Thomas Jefferson in the HBO miniseries John Adams (2008), a part which earned him a Primetime Emmy nomination. An experienced stage actor who has been called an "actor's actor", Dillane won a Tony Award for his lead performance in Tom Stoppard's play The Real Thing (2000) and gave critically acclaimed performances in Angels in America (1993), Hamlet (1990), and a one-man Macbeth (2005). His television work has additionally garnered him BAFTA and International Emmy Awards for best actor.