A brilliant film that helped define a genre

It's hard to see any effort in the film. There's no comedy to speak of, no real drama and, worst of all.

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."

By the time the dramatic fireworks start popping off, each one feels earned.