A brilliant film that helped define a genre

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."

There is, somehow, an interesting story here, as well as some good acting. There are also some good scenes