About the book: year / Masha Shkolnikova finds a wounded carrier pigeon on her balcony. Who does it belong to and where did it go? Does the owner of the dovecote from Ulansky Lane really want to help the guys find the owner of the purebred bird? What does the publishing house “Prolyunyaev and Sons” have to do with all this? Only by answering these questions will the Company from Bolshaya Spasskaya be able to avoid mortal danger…