- Country: UK
- Genres: Thriller
- Release: 2016-06-17
- Director: Euros Lyn
- Writers: Fflur Dafydd
- Language: Welsh
- Stars: Dyfan Dwyfor , Carwyn Glyn , Sharon Morgan , Catrin Stewart , Catrin Stewart , Ryland Teifi
- Runtime: 87 min
- Awards: 1 win & 4 nominations
- AKA: Armadilha Mortal (Brazil) , The Library Suicides (United Kingdom) , 더 라이브러리 수어사이드 (Korea) , The Library Suicides (United States of America) , The Library Suicides (United Kingdom) , The Library Suicides , Y Llyfrgell
- Plot:
Twin sister librarians Nan and Ana plan revenge when their author mother commits suicide, with her final words suggesting her biographer murdered her.
- IMDB:tt5171500