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A detective leaves London for coastal Wales, where he confronts mystifying murders that push him to the edge in a place with secrets as dark and destructive as his own.
IMDb 7.620144 episodes
Free trial of Acorn TV or buy


  1. S1 E1 - Devil's Bridge
    August 29, 2015
    1 h 36 min
    Newly arrived in Aberystwyth, DCI Tom Mathias is called to a scene of carnage: a 64-year-old woman has been brutally attacked, but she's nowhere to be found.
    Free trial of Acorn TV or buy
  2. S1 E2 - Night Music
    May 4, 2014
    1 h 35 min
    When an elderly man is bludgeoned to death, Mathias must solve a jigsaw whose pieces include eerie photographs, the German Wehrmacht, and a love story spanning 70 years.
    Free trial of Acorn TV or buy
  3. S1 E3 - Penwyllt
    May 11, 2014
    1 h 35 min
    When divers find a young man's body in a quarry lake, the investigation pulls Mathias into the complex web of a close-knit community that lives by its own rules.
    Free trial of Acorn TV or buy
  4. S1 E4 - The Girl in the Water
    May 18, 2014
    1 h 36 min
    The body of a young woman in a scarlet dress is discovered at the center of a marshland. Mathias becomes too emotionally involved in the case, a fact that Mared notices.
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More info

Content advisory
Violencefoul languagesexual content
Audio languages
English [CC]
Marc EvansGareth BrynRhys PowysEd Thomas
Gethin ScourfieldEd Talfan
Eiry ThomasIfan Huw DafyddSara Lloyd-Gregory
Acorn TV
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