The Nordic Fake Orgasm Experiment
To help Gyldendal get selected as the Danish publisher for the new Lars Kepler crime book, we used an element from the genre; solving a puzzle. We sent a mysterious locked book, and only by solving two puzzles could they see the book's content. The book itself was a presentation of Gyldendal as well as two campaigns for the launching the book in Denmark.
Take me back, I wanna go home!