"The most valuable asset any country can attain is control of the human mind."
Four individuals sign up for a psychological research study only to discover that they are now subjects of a brutal, classified government program.
The film is a taut, effective psychological thriller and character study. It's not entirely novel, but it's well done and could possibly be set on a stage as a play. The set is not elaborate, taking place almost entirely in a white, locked room, and the pacing relies on dialogue and Deus ex Machina, as well as what Hitchcock called MacGuffins, e.g., the gun, the clock, the questions on notes, etc. These types of plot devices are common in thrillers, and they're used to decent effect here. I will agree somewhat with people who found a lot of the dialogue to be very quiet, almost mumbled, particularly when the crew were communicating over the radio. I had the volume up and could hear it, but I believe it was done for a reason and has the effect of subtly adding tension (if you can hear it), and it's likely done for a reason by the researchers. Indeed, everything that happens in the film can be considered part of the experiment. Or perhaps not ..