Great concept, but flawed execution.
Ten strangers sign up for a highly lucrative but mysterious role. They then discover that they are to be part of a social experiment lasting seven days. Also turns out that the experiment involves murder...
Very interesting premise, and the first few scenes for the movie were very intriguing. The movie felt like Battle Royale meets Cube meets Cluedo, with a touch of Agatha Christie thrown in.
However, it doesn't quite deliver on its promise. While trying to be a study in human behaviour, it doesn't really capture human behaviour very well.
In addition, many plot developments feel contrived, and can easily be explained away, by means more obvious than those decided upon in the movie.
We also have twists for twists sake, some of which are telegraphed a long way off.
On the plus side, there is still a good degree of intrigue, and this does keep you interested.
Overall: okay, but not great. A tighter, more focused script and this would have been excellent.