See No Evil (Christopher Menaul, 2006)

Slight cheat as it was a two-part drama series about the Moors murders (ITV has made some good horror over the years), but more harrowing and tense than most horror films. Couple of scenes in this are now permanently seared into my memory. I didn't want it to end, but was curiously relieved when the credits rolled. I had a similar reaction to Snowtown. I thought it had a terrific grasp of point-of-view, telling the story through the key witnesses, police, relatives of victims, whilst also offering a bearable insight into the killers without wallowing inside their awful minds.

Recommended, but with the caveat that it might be distressing for many viewers with children. Very disturbing indeed.