I gave it a 7.5 out of 10

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."

Story: It's very simple but honestly that is fine.