A 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."

The first must-see film of the year.

Strong acting helps the film overcome an uncertain premise and create characters that hold our attention absolutely.

There's a more than satisfactory amount of boom-boom in the movie's trim running time.