Directed by James Watkins, the very nasty British thriller Eden Lake (2008) has a good solid premise: the contemporary fear - justified or not? - of “feral” teenagers. In the movie, of course, such fears are justified: the focus is on a couple (Kelly Reilly and Michael Fassbender) who are at first irritated and inconvenienced and then brutally terrorised by a group of teenagers while on holiday in the English countryside. Ruthlessly exploiting our dread of the kind of reprisals that simply confronting people about a noisy ghetto-blaster or an unruly dog might bring upon us, the film starts strongly. But a descent into hysteria and torture-porn gore sink it by the end.