The Tunnel

The plot follows detectives Karl Roebuck and Elise Wasserman 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, terrorising both countries in the process Set primarily in Folkestone and Calais where detectives Karl Roebuck and Elise Wassermann are called to investigate the death of a French politician. When a shocking discovery is made at the crime scene, the pair is forced into an uneasy partnership as they seek out a politically-motivated serial killer who draws them into his own personal agenda.