|Directed by||Jonathan Liebesman|
|Written by||Gus Krieger, Ann Peacock|
With the goal of earning some extra cash, four unwitting volunteers sign up for what they believe is just another paid research study. Instead, they embark upon the worst night of their lives, becoming pawns in a deadly, classified government program that was thought to have been terminated more than 20 years earlier. As a group, they are presented with a series of questions and a finite window of time by which each of them must submit a unique numerical answer. Presumably the subject who is furthest from the correct response will be "removed" from the experiment. They soon come to realize that, in this lethal psychological game, the correct answer is not always the right one.