Released in 2011, this absolutely harrowing film, based on Lionel Shriver's 2003 award-winning novel of the same name, deals with a mother (Swinton) and her uncontrollable, sociopathic son (played with chilling effectiveness by Ezra Miller). And this film is harrowing precisely because the horrific events in it are not only within the realm of possibility, but have already happened in many forms. This is definitely one of those films that requires viewing without much information or plot points so I feel I need to honor that and keep this review brief, without spilling too much. I will say however, that it begs the question--and this is something that you could keep in mind going into it-- how much is a parent responsible for the behavior of their children?
Tilda skillfully plays the mother with a sickening sense of restrained helplessness. And all three of the actors who play her son Kevin at various ages do a marvelous job. It may be Tilda's film, but it depends heavily on the interaction between her and those three actors.
Recommend? Yes. But be aware it is a penetrating psychological study. Hang on.