Not long ago, Seichan, an assassin, worked for the sinister organization "Guild". But now she has escaped from it, joining the Sigma group, carrying out secret missions of the American government. And now Seyhan needs to find out all possible information about her former employers. She has found a scientist from the Guild who is willing to give her important documents during a personal meeting in Paris. However, there the girl fell into a trap. To free herself and get documents, she must save the son of a scientist who has fallen into the clutches of a bloody religious sect. To do this, Seichan will have to walk the path of the dead and get the key to an ancient and terrible secret. The key that will open the doors of all secrets to Sigma... For the first time in Russian! A new work by James Rollins, which is the background to the novel “Devil's Colony”!