A cursed deck of cards, dark forces and a dangerous intrigue - the fate of the world is decided card by card in The Devil's Prayer Book , the latest mystery thriller from successful author Markus Heitz. Now fans can experience the thrill themselves with the card game Supérieur developed by Markus Heitz . In the best poker style, but with only one card in their hand, the players test their luck. Every round they have to decide whether to call, fold or maybe even increase the bet. Then the highest card decides who gets to take the pot. In the end, the winner is the one who is able to wrest the last coins from his fellow players - a merciful fate, because at least they escape with their lives.