The Tunnel

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. 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