As somebody who had not heard any of this before, it became a curious phenomenon to sit and watch a film and slowly have the realities begin to click into place.

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 joyful confection is coated in a sparkly gloss, bright enough to gleam from the darkest, most cynical corners.

A great movie, one of the best of this year. There was a bit of confusion at one point in the plot, but nothing serious.