The performances transcend the film's tropes, grounding it in characters that feel more complete than this subgenre often produces.

If the ambition is to provide two hours of instantly forgettable, popcorn-munching escapism, it succeeds.

This story has more twists and turns than a second-rate soap opera.

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."