When a medieval scroll disappears from a Paris church, Doctor Julien Sauniere investigates, uncovering a series of horrific ritual murders and an ancient secret society. Julien cannot let these shadowy figures retreat into the darkness, lest they take up their killing once again. His investigation turns into a one-man quest into the bizarre secrets of the Catholic Church.

From a disgraced order of knights to the secrets of a neoclassic painter, Julien Sauniere follows a trail of conspiracy that extends all the way to the walls of Jerusalem during the first crusade. In a Europe where sorcerers stalk the streets and the Catholic Church reigns supreme, Julien pursues a truth that could change the world forever. Powerful forces have dedicated themselves to ensuring he does not succeed.

Doctor Julien Sauniere continues his investigation into the theft of a mysterious medieval scroll, only dimly aware of the forces tugging him to the doorstep of the powerful Duke of Lorraine. Lorraine wants to provoke a massive, globe-spanning war that will soak the world in blood - but why? The answer to that question, a deadly confrontation in the ancient catacombs beneath Paris, and a blasphemous revelation about Judas, Christ's betrayer, all await Julien in this volume of the critically acclaimed series Rex Mundi!

Paris, 1933. Europe is still in the grip of feudal warlords, the Catholic Church has all the power of a secret police force, and sorcerers stalk the streets at night. Welcome to the world of Rex Mundi. Master Physician Julien Sauniere stumbles onto a thousand year-old brotherhood dedicated to protecting the secret of the Holy Grail - a secret that threatens to drown the world in blood Sauniere digs deeper and deeper into the mystery of the Holy Grail and finally he uncovers the connection to the Duke of Lorraine. The Duke, meanwhile, is forced to make a bid for power when the king orders his arrest. If he can't succeed, he will surely hang