"The Box" ~ 9/10

This movie Richard Kelly has been working on for years is finally done, adapted from a short story ("Button, Button") written by the science-fiction master Richard Matheson - to whom Kelly bought the rights in person, with his own money, a long time ago.
So the film starts on a cruel dilemma (very few dilemma are not...), and soon we discover there was something bigger underneath the very dilemma.
The way the period is described takes us back in time as if the movie itself had actually been _made_ in some creepy part of the american seventies. The subject of Cold War is never approached, yet this movie talks a lot about "fear" and "fears" (something Richard Kelly likes to do) as it was all over America then. This time it is not about teenager fears like in his two previous movies, but something more adult, and more intimate.
Frank Langella is a huge actor and proves it here once again ; Cameron Diaz is not that bad either...
As always with Matheson, this story here is more psychological rather than purely "science-fictive", but that's exactly what Richard Kelly needed as a "draft", to make another great movie full of implications and references.
The music was also great for the fears it conveyed, but not in the same way the "Donnie Darko" soundtrack did. Maybe that's what I miss the most.