About the book: 2014 / Continuation of the adventures of Katya Larionova and her friends. The catastrophe was averted, but the enemy, naturally, is not asleep. He is planning to completely destroy the project, and in order to stop him, Katya will have to try on the role of a detective. If you don’t identify the traitor among the people nearby, then everything is lost. And Katya has only four days to do this. Time has passed…