Petrovka, 38 (Russian: Петровка, 38) is a 1980 Soviet crime film directed by Boris Grigoryev.
[4] In May 1979, Moscow Criminal Investigation Department officers—Colonel Alexei Pavlovich Sadchikov, Major Vladislav Nikolaevich Kostenko, and Senior Lieutenant Valentin Roslyakov—investigate a series of daring robberies carried out by a gang of criminals wearing dark sunglasses.
Forensic experts identify the fingerprints on a pistol as belonging to one of the robbers, and the detained suspects let slip information about "Prokhor," the gang leader.
The investigation leads the detectives to a quiet village near Moscow, where they discover that an unassuming old man is, in fact, Prokhor, the gang’s leader.
Major Kostenko then apprehends the fleeing Prokhor and presents him with the irrefutable evidence collected in the investigation.