About the book: year / End of 1932. Junior lieutenant of the intelligence and counterintelligence department Mikhail Shlaevsky, together with his new partner, Captain Polev, was sent to Tula to investigate cases of espionage at a defense plant. Will they be able to work together? And how will the operation, which began with dubious adventures in Chinatown, end? Author's notes: Continuation of the story "Fatal Emeralds"".