Police investigate when the body of a girl is found in a lake.


Mark Andrew, Ed Talfan
1,483 ( 23)




3   2   1  
2021   2019   2018  
1 win & 5 nominations. See more awards »





Series cast summary:
Sian Reese-Williams ...  DI Cadi John / ... 13 episodes, 2018-2019
Sion Alun Davies ...  DS Owen Vaughan 13 episodes, 2018-2019
Victoria Pugh ...  DSI Susan Lynn 13 episodes, 2018-2019
Nia Roberts Nia Roberts ...  Elin Jones 12 episodes, 2018-2019
Lowri Izzard ...  PC Mari James 12 episodes, 2018-2019
Garmon Rhys ...  PC Ryan Davies 12 episodes, 2018-2019
Sarah Tempest ...  Alys Mitchell 9 episodes, 2018-2019
Rhodri Meilir Rhodri Meilir ...  Dylan Harris 8 episodes, 2018
Gwyneth Keyworth ...  Megan Ruddock 8 episodes, 2018
Gillian Elisa Gillian Elisa ...  Iona Harris 7 episodes, 2018
Ian Saynor ...  Huw John 7 episodes, 2018
Elodie Wilton ...  Nia Harris 7 episodes, 2018
Melangell Dolma Melangell Dolma ...  Sam Shepherd 7 episodes, 2018-2019
Annes Elwy Annes Elwy ...  Mia Owen 6 episodes, 2019
Owen Arwyn Owen Arwyn ...  Alun Pryce 6 episodes, 2018
Steffan Cennydd ...  Connor Pritchard 6 episodes, 2019
Sion Eifion ...  Lee Williams 6 episodes, 2019
Bryn Fôn Bryn Fôn ...  Hefin Mathews 6 episodes, 2019
Lois Meleri-Jones ...  Lowri Driscoll 6 episodes, 2018-2019
Lois Elenid Lois Elenid ...  Beca Mathews 6 episodes, 2019
Lisa Victoria Lisa Victoria ...  Catrin Pritchard 6 episodes, 2019
Lara Catrin Lara Catrin ...  Lea Pryce 6 episodes, 2018
Megan Llyn Megan Llyn ...  Bethan John 6 episodes, 2018-2019
Ffion Dafis Ffion Dafis ...  Kelly Owen 6 episodes, 2019


The eight-part drama, filmed in Snowdonia, tells the story of detective DI Cadi John (Sian Reese-Williams), who returns to North Wales to care for her ailing father. However, when the body of a young woman is found in a local river, it becomes obvious that sinister secrets lie within the stunning North Wales scenery. Cadi's world - and the world around her - is changed forever. Written by AnonymousB

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Not Rated | See all certifications »

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User Reviews

Fed up about reviews criticising the Welsh language
27 January 2020 | by betsanjenkinsSee all my reviews

I am two episodes in and so far it's everything you want. Beautiful and brooding landscapes, twists and turns... but the main reason I'm writing a review is because of the negative comments towards the use of the welsh language.

Firstly, they're in Wales so they're speaking Welsh. Makes sense doesn't it? If you can't be bothered to experience some culture and pay attention to the episodes by occasionally having to read some subtitles then this isn't a series for you. I also love all the Scandinavian murder mystery dramas and this is very similar. SO if your idea of a good serial killer series is something like Criminal Minds then I'm afraid this is a bit too sophisticated for u x

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Welsh | English

Release Date:

9 June 2018 (USA) See more »

Also Known As:

Hidden See more »

Filming Locations:

Wales, UK See more »

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