A scary film and quite different from Hollywood films of the same vein. True, sometimes one thinks about The Walking Dead zoom on zombies from a tower block, but one is spared the so often atrocious music and cheesiness of films from the other side of the pond.

A truly gripping beginning which makes one question what the hell is going on. A teacher (Gemma Arterton, seen in more cheerful times in Gemma Bovery) shows affection towards one of her pupils (the amazing Sennia Nanua) in a very strange and sinister military facility where kids are strapped down in wheelchairs. Turns out they are no ordinary kids. Paddy Considine (My Summer of Love) is a military officer who turns out not to be such a villain after all, though... the same cannot be said about the very chilling portrait of the scientist Glenn Close who does indeed look a bit like a Madame de Merteuil.

I wish I could say more about the plot but that would spoil it for you. I can only say that I was drawn to the non-showy atmosphere - that can also be seen in other great Brit sci-fi films such as Sunshine or Children of Men. Definitely a must-see but warning: the end is even more upsetting than the beginning and will lead to deep ethical questioning. Does it really pay to be nice? Or does one have to be nice, whatever the consequence because one simply has to?