Doubleday, the publisher of Dan Brown’s new book has announced that a series of puzzles will be used to promote the new book.

“codes, cryptic trivia, puzzles, secret history, maps, aphorisms”

These will be made available through Twitter and Facebook.

It is an example of the growing influence social media is having on the entertainment industry.

This looks like his Twitter profile, and his Facebook profile is here too.

I might be keeping an eye on these ones, looking forward to the book!

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