Title: Zagadka pochtovogo golubi͡a
Description: The kids of the "Company from Bolʹshai͡a Spasskai͡a Street" didn't imagine that the carrier pigeon that landed on Masha's balcony was actually a harbinger of a new and very dangerous investigation. The search for the bird's owner leads the youngsters to a different and unexpected find.
Subjects: Detective and mystery stories, Juvenile fiction