Gripping story with well-crafted characters

Simple and well acted, it has tension enough to knot the stomach.

It is not only a funny movie, but it allows a great amount of joy for anyone who watches it.

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."