Tavern on Pyatnitskaya. Agony

In difficult years, the NEPA in the very center of Moscow was operating a gang. Six impudent raids have been committed, the collector was killed. Only after the third robbery, employees of the criminal investigation person managed to attack the trace of the organizer of the crime-a recidivist nicknamed Gray, but someone informs the bandits about the preparatory operations of Moore (Taver on Pyatnitsky).
From Petrograd to Moore, a message was received about the bank robbery that was being prepared in Moscow. Suspicion falls on a recidivist-medweight named Korin. In order to find the bandit, the subnector of the criminal investigation department offers to introduce an employee of Moore into the criminal environment (agony)