The Tunnel - Season 1

Inside the Channel Tunnel, on the borderline between Britain and France, the body of a woman is discovered. As the corpse is lifted it becomes clear that this is no ordinary murder. A thrilling and complex cross-Channel investigation ensues.

The killer claims to highlight the ills of contemporary European society as his second 'truth' unfolds. Stephen Beaumont crosses the paths of Karl and Elise once more. Are they any closer to an answer?

As Suze is recovering in hospital, the killer, nicknamed the "Truth Terrorist" by Hillier, calls Hillier to inform him he will continue the second truth in France, and later kidnaps a World War 2 veteran. Elise comes to understand that the Truth Terrorist is a mastermind, having covering his tracks thoroughly. What he does not account for is that a runaway teen couple accidentally find Jean-Claude, and are captured by the Truth Terrorist.

The detectives battle to locate the elderly soldier before he freezes to death. In the meantime, is naïve teenager Sophie safe lodging with seemingly harmless Benji?

The Truth Terrorist's third truth begins as Benji carries out his Samurai mission. Sophie's life is now at stake and police believe they can use her to stop TT's rampage. Karl gets more than he bargained for while visiting Charlotte.

As youths are burnt alive, police suspect the hand of the Truth Terrorist once more. They finally make a key arrest. Will this be the end of the killings in this brilliantly tense Anglo-French thriller?

Police think they may finally have a lead, as the serial killer's actions escalate in his fifth and final 'truth.' Karl and Laura's relationship takes another turn as Laura steps up her flirtations with another man.

French police capture but then lose the prime suspect. Next, their lead detective goes missing. Things eventually start to fall into place though, but something is troubling Karl...

In the penultimate installment, things take a very nasty turn for Karl as police get within a hair's breadth of catching the killer. Will they make it in time?

Karl falls apart as the Truth Terrorist's change of direction becomes too much to bear. What will be the cost of catching their man? A hair-raising showdown begins.