Sometimes, the scariest stories are the one that feel the most credible and real – whether that goes for outright horror movies or ... one of these schools. The trailer also shows us Patrick ...

It was so scary," one pupil recalls. Shouting "I'm going to kill you", a teenager had stabbed teachers Fiona Elias and Liz Hopkin, as well as a fellow pupil at the secondary school in Ammanford.