What would you think if you received an email from Azazel—an angel of death? Someone’s silly prank! That’s exactly what Ulyana Osipova thought. But when two of her colleagues died after receiving the same message, she understood—unfortunately—that it wasn’t a joke. Someone was cleverly manipulating her, pursuing clearly evil goals. Ulyana had to dig into history, learn about the existence of the “Fifth Gospel,” see the body of a man bricked into a wall—and still not come any closer to solving Azazel’s riddle. It seems she’s doomed to serve an evil spirit. And then her guardian angel appears—very conveniently, a quite charming young man. But that only makes the situation even more tangled…