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Season guide

The Tunnel: Vengeance

6 episodes Premiered Dec 14, 2017 Updated Oct 23, 2026

Task: Write a JSON object for "The Tunnel" Season 3. Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points). Constraints: Use only provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (in the text, though the primer is an array). Output valid JSON only. Target Audience: Public reference site (neutral, encyclopedic prose). TMDB Synopsis:

Previously on The Tunnel

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ A stolen fishing boat found adrift and on fire in the English channel turns into a new case for Karl and Elise.
  • ⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • ⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • ⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
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Season overview

Task: Write a JSON object for "The Tunnel" Season 3.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use only provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (in the text, though the primer is an array). Output valid JSON only.
Target Audience: Public reference site (neutral, encyclopedic prose).
TMDB Synopsis: A stolen fishing boat found adrift and on fire in the English channel becomes a new case for Karl and Elise. They must grapple with decisions made and must make decisions regarding the value of a single life.
Source [1]: Detectives Karl Roebuck and Elise Wasserman work together to find a ser... (cut off).
Source [2]: Irrelevant (Robert Towne/Mad Men).
Source [3]: Detectives Karl Roebuck and Elise Wassermann investigate the death of a French politician in Folkestone and Calais. They form an uneasy partnership to find a politically-motivated serial killer.
Overview:
The third season of The Tunnel centers on a new investigation involving a stolen fishing boat. The vessel is discovered adrift and on fire within the English channel, presenting a new case for detectives Karl Roebuck and Elise Wassermann. As they navigate the complexities of this discovery, the characters are forced to confront the consequences of past decisions. The narrative arc explores the weight of their choices and compels them to make new decisions that address the fundamental question of the value of a single life. Throughout the season, the duo must work together and apart to resolve the crisis at hand. This case follows their previous experiences working in Folkestone and Calais, where they previously investigated the death of a French politician and pursued a politically-motivated serial killer. In this installment, the stakes involve the deadly heart of the matter as the detectives grapple with moral dilemmas.
Word Count Check (Overview):
"The third season of The Tunnel centers on a new investigation involving a stolen fishing boat. The vessel is discovered adrift and on fire within the English channel, presenting a new case for detectives Karl Roebuck and Elise Wassermann. As they navigate the complexities of this discovery, the characters are forced to confront the consequences of past decisions. The narrative arc explores the weight of their choices and compels them to make new decisions that address the fundamental question of the value of a single life. Throughout the season, the duo must work together and apart to resolve the crisis at hand. This case follows their previous experiences working in Folkestone and Calais, where they previously investigated the death of a French politician and pursued a politically-motivated serial killer. In this installment, the stakes involve

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

50%
50%
Mytharc (3): Crucial lore & season climaxes
Core (3): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Episode 1

Dec 14, 2017 · 47 min

A burning fishing boat found on the Channel turns into a new case for Karl and Elise in the third and final chapter of the series.

S3·E2 Core

Episode 2

Dec 21, 2017 · 48 min

A shocking discovery is made at an immigration removal centre alongside a sinister animation containing a hidden message.

S3·E3 Core

Episode 3

Dec 28, 2017 · 47 min

The investigation steps up when Winnie is sent a live rat in a box, with a set of co-ordinates leading to the Pied Piper’s latest victim. Meanwhile, Karl’s disapproval turns to con

S3·E4 Core

Episode 4

Jan 4, 2018 · 52 min

As a young mother-to-be helps Karl and Elise with their enquiries a new development threatens to tear the pair's partnership apart.

S3·E5 Mytharc

Episode 5

Jan 11, 2018 · 50 min

Karl makes a foreboding discovery at Elise’s apartment, and the pattern of missing people continues.

S3·E6 Mytharc

Episode 6

Jan 18, 2018 · 51 min

In the final episode, Karl and Elise face a tense and gripping showdown with the Pied Piper, while the truth about the Moreau abduction is revealed at last.

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