[LovesMacs]

There is one book I wish so much I hadn't read that I can no longer remember its title nor its author. Its plot was something about searching for a rare book that could summon demons, and there are sinister people resembling book characters who also seek the book. Later on, the protagonist...

Spoiler:

...discovers the whole premise is all a ruse and the assassins are all hired actors or some nonsense like that.

I felt very cheated at having to read all that. Too bad the title eludes me.