Rare books dealer Augustus Adams unexpectedly received a postal package from his father, with whom he had not spoken for twenty years. It contained the “Gospel of Henry the Lion,” written at the end of the twelfth century, an incredible rarity of great value. Augustus has no doubt - this is a copy, because the original is safely hidden in one of the German book depositories. But immediately after the unexpected parcel, strange and dangerous people burst into Adams’ life, whose goal is to take this book away from him, no matter whether he is alive or dead. Is the tome really genuine?.. August does not yet know that this “Gospel” is not just a second-hand book rarity. For on its pages is encrypted an ancient secret that truly has no price...