Twists in the Tale: Spoiler Request for Scarlett Thomas's "Bright Young Things"

[pmcray]

I was recently reading an interview with Scarlett Thomas in which she discussed "Bright Young Things", her first "proper" novel (as opposed to the three now deprecated detective novels). The novel involves a group of twenty-something media trendies who mysteriously find themselves isolated on an island, possibly as part of some kind of reality show. I know from reading the reviews on Amazon that there is some kind of twist (or twists) at the end. I have my own theory of what this twist (or family of twists) could be, but I don't want to read the book to find out (my views on Thomas's "PopCo" are well-known). If anyone could let me know what the revelation is, I would be eternally grateful (I know it's cheating, but I am not a patient man).