What makes it different from others?
What a freaking movie. So many twists and turns. Absolutely intense from start to finish.
View MoreSimple and well acted, it has tension enough to knot the stomach.
View MoreA film with more than the usual spoiler issues. Talking about it in any detail feels akin to handing you a gift-wrapped present and saying, "I hope you like it -- It's a thriller about a diabolical secret experiment."
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