Want to see a movie that leaves you uneasy, paranoid, makes you question the reality you're presented with? Scared to go out and scared to stay in? But at all cost, distracts you from mundane reality? This is one film that does that. Forget movies that rely on lavish helpings of gore and blood, gratuitous violence, habitual screaming and endless repetition of expletives. That's not scary any more. It was only ever shocking, really, and nowadays people seem to have become used to that. No, this is a French film. No clichéd devices such as explosions of discordant noise to startle you when you least expect it. Instead, something excruciatingly sinister somehow manages to silently creep out from this film, like a miasma. A chilling, clammy, atmosphere that's reinforced by subtle but compelling acting and directing. Did you hear a noise just then . . .?<br /><br />I've seen this film only a few times over the years as an adult, but I was still left disturbed by it each time. I didn't exactly 'have to leave the light on' when I went to bed afterwards. But, let's say, it left a permanent impression on me. It's the way it's executed, you see. I'm too macho to admit to anything more. For connoisseurs of effective films of this genre, this is a must for the collection. You'll end up looking over your shoulder after seeing this film. Unless, of course, they come for you too . . . .