i know i wasted 90 mins of my life.

I gave this film a 9 out of 10, because it was exactly what I expected it to be.

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."

While it doesn't offer any answers, it both thrills and makes you think.