My first reaction is that I need to watch it again. While personally I did not think it was scary, it does have moments that are typical to make the viewer jump. It does have a big and somewhat surprising twist at the end (which I thought was very clever and well executed), however I think the most scary aspect upon reflection is if that twist might actually be true in some real life cases, that is seriously scary and very sad. It was a good film, I look forward to watching it again, there is some light relief and laughter in one of the tales and some of the acting is very good - Martin Freeman and Alex Lawther particularly. The problem is that you just don't care about the wrap-around as Prof. Goodman is a priggish bore, an academic bulstered by his own beliefs and ego. Also, once the twist was revealed even the Prof's name annoyed me slightly - the point felt a little hammered home. I did feel that the explanation of Locked-in Syndrome was absolutely disgracefull, and not in line with medical science, which was just sloppy: now there is a film to watch - 'The Diving Bell and The Butterfly. Overall: good; worth a watch; not in itself scary; definitely food for thought.
Review of Ghost Stories
