Citizen X

He eventually catches up to the killer, but is stymied because the man is a low-level Communist Party member and the Party protects him. Eventually, Communism collapses and Burakov is appointed head of the investigation. He brings in a psychiatrist, who writes a deep analysis of the type of person involved. Burakov's superior contacts the FBI, discovering that Burakov is legendary because of his insight and dedication. They identify a man, Citizen Chikatilo and arrest him. The psychiatrist meets with Chikatilo and through his reactions, they realize he is the guilty party.