In Frank ThiIlier’s thriller “The Puzzle,” Ilan and Chloe—professional treasure hunters—go undercover in a mysterious game where the main prize is three hundred thousand euros, and the price of winning is a human life. They don’t know the rules of the game; they only know its name: “Paranoia.” In the mountains, on the territory of an abandoned psychiatric hospital, eight participants must face their deepest fears. To obtain the key to the coveted safe with money, you must collect ten black crystal swans. But be careful: the price of such a find is life. Your life.