The Awakening (2011)

Rebecca Hall stars as Florence Cathcart, a professional debunker of supernatural phenomena, who is sent to a school where spooky goings on have been reported. As she begins to investigate ghostly sightings, it becomes clear that she is involved in these events in deeper ways than she realises. 

Directed by Nick Murphy, this is a genuinely creepy thriller that follows the first rule of horror: what you don’t see is scarier than what you do see. 

Imelda Staunton is excellent as a member of staff at the school, while Dominic West is pretty good as one of the teachers who becomes romantically involved with Cathcart.

On the down side, too much happens in the last 10 minutes, so the ending does seem a little rushed. And the deliberately ambiguous ending may frustrate.