Byomkesh jumped on the assailant and thus his sting operation was successful in nabbing the culprit who was none other than Prafulla Roy. But before the police arrived, he was successful in committing suicide by eating a poisoned betel leaf. His only regret before dying was that he had not taken Byomkesh more seriously and had thus fallen prey to the trap Byomkesh had set for him. Byomkesh was awarded by the Metropolitan Police and received a check for two thousand rupees from Mr Mitra. However, he did have to relinquish the bicycle bell which had a spring action mechanism for shooting the gramophone pins while masking the noise with the ringing of the bell.