Instead, you get a movie that's enjoyable enough, but leaves you feeling like it could have been much, much more.

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."

Excellent and certainly provocative... If nothing else, the film is a real conversation starter.

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.