Byomkesh Bakshi ki Rahasamayi Kahaniya - Gramophone ke pin ka rahasya - Last Part

Byomkesh was known for his intelligence, his keen understanding of things that was way above normal people. That was why he was such a great detective. He broke down the case at various levels and not only helped people from further getting murdered but also saved the police of all the work. But, who was the killer and how did Byomkesh add up the events which led the killer himself to be trapped in Byomkesh's words? Listen to this last part of this wonderful short story.