When the historian Sinan Arslan descends into the Vatican Apostolic Archive, he finds a manuscript that lay hidden for fifteen hundred years. On every page stands a single word: Anhar — in Aramaic "river," in Syriac "light," in the Mandaean tradition purification itself. It is the suppressed root of the Qurʾānic wa-nhar, upon which a strange meaning was imposed for centuries.Sinan uncovers the trail of a community that called itself the Keepers of Anhar — guardians of the flowing water. A tradition without a center, older than Rome and Christianity. At the Council of Nicaea (325) it was declared heresy and banished. From that day it fled: from Rome, the crusaders, the Ottomans — and finally the modern world.Why does power, in every age, turn against the same target? The stone is what stands still; power loves the stone, for the fixed can be named and controlled. But water knows no borders — and always found a way.A novel about faith, power, and the truth that cannot be pinned down, in which history, theology, and suspense converge into a single stream. For those who dare to read what was silenced for centuries.