In truth, there is barely enough story here to make a film.

How wonderful it is to see this fine actress carry a film and carry it so beautifully.

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."