Your blood may run cold, but you now find yourself pinioned to the story.

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."

The movie really just wants to entertain people.

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.