The world is too multifaceted for any creature to say with confidence: “I know everything about the world, in all its manifestations.” So, on one of the little-known borders of Enrof, there is another - the wrong side of being. Sometimes both worlds come into contact and merge into a single whole. And then the only thing that remains for a person is to admit the existence of something unusual, strange. Most often he calls it in one word - mysticism. The angel Lucia and the demon Sarkon have to work together so that there is not too much mysticism for the human world. But human "diseases" are too dangerously close to the messengers because of the shadow. Who will get infected first? I am posting the entire novel. Completely free.