The Heretic's Codex

Paris, 1277. When logic professor Guillaume de Montfort finds his mentor dead, clutching a mysterious manuscript covered in geometric patterns, he uncovers a secret that could shatter medieval society: consciousness itself shapes reality, and the architecture of Notre-Dame Cathedral was designed to prove it.

As scholars begin dying and strange entities manifest in Paris's streets, Guillaume must race against time to decode his father's work and prevent ancient geometric beings from using Not...