Originally posted online as a riff on the Twilight fan-fiction series Masters of the Universe, the story soon got picked up as an eBook, spawned twosequels and sold over a quarter of a million copies online.
He had no idea that The Girl with the Dragon Tattoo and its twosequels (known as The Millennium Trilogy) would become some of the best-selling books ever.
If Sanctum does flop, Cameron can always comfort himself with the knowledge that the two Avatar sequels he is currently at work on will likely earn him hundreds of millions more dollars.