This is one of the best movies I've seen in a long while. I am lucky that I was able to see it at a screening, and I will certainly look out for other movies from the director and writer.
It starts off low key and you're not sure where it is going to go. Then things get very intense dramatically. In a lesser movie this would be near the end, but in this movie it is just the beginning. At times it gets emotional with very excellent acting. The plot keeps changing in unpredictable ways, and who the plot is revolving around keeps changing also. Really well designed story and well directed production.
Apparently it is on the verge of release in the US. The version I saw in a US screening was subtitled (one of the forum posters asked if it would be dubbed).