The Library Suicides, adapted from the bestseller Y Llyfrgell by Fflur Dafydd, is a exciting psychological thriller that is quintessentially British, yet sets itself apart with its use of language and setting. Directed by Daredevil and Broadchurch creator Euros Lyn, it was shot entirely in the National Library of Wales - and setting it apart from other British thrillers, is a Welsh language feature.

After a famous author throws herself from a window, her twin daughters Ana and Nan (Catrin Stewart - who pulls a "parent trap" on us by playing both roles) set out to find out what happened, the only clue being their Mothers final word "Eben", which just happens to be the name of her biographer. The twins, who are brilliantly performed by Stewart, hatch a plan for revenge, using the library in which they work as archivists as the perfect setting for a game of cat and mouse.

Of course, not all goes to plan, with security guards and moral differences pushing the twins further from each other. This film feels like it could be an ITV two-parter, or a BBC feature, due to an aesthetic that is not too dissimilar from the likes of Law and Order: UK, or Whitechapel. Being a psychological thriller, the mind and memories are two things that are explored throughout the story, and it is not difficult for the audience to relate to Ana and Nan at various points in the narrative. Your allegiances change, you become confused, adrenaline pumps through your veins, just as it happens to the characters.

The ending seems to carry on this confusion, because the thing is, I can't bloody work it out! Of course, I will not spoil it for you, in fact, I urge you to watch this film so we can all talk about it. Maybe I'm over-thinking it (probably), or maybe the twist just worked better in the original novel (possibly) - either way, it's an interesting ride which will definitely get you thinking.