The Tunnel (French: Tunnel) is a British/French crime drama television series, adapted from the 2011 Danish/Swedish crime series The Bridge (Broen/Bron). The Tunnel began broadcast 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 Wasserman, respectively. The plot follows the two detectives working together to find a serial killer who left the upper-half body of a French politician and the lower-half of a British prostitute in the Channel Tunnel, at the midpoint between France and the UK. They later learn that the killer—who comes to be nicknamed the "Truth Terrorist"—is on a moral crusade to highlight many social problems, terrorizing both countries in the process. As the series progresses, the killer's true intention is revealed. A second series is reported to be in the works.