History is full of darkness

A Swiss water treatment facility for the rich looks more like a mental institute or a prison. A young executive is sent there to find his boss and bring him back home to negotiate a corporate fusion. However the facility doesn't let anything go very easily. Lots of stuff should have been left out, the movie has been prolonged (two and half hours) for nothing, but when it's good, it's deliciously creepy. Most definitely influenced by Shutter Island.