Once he had a lead from Shahryar, Inspector Nasir was in his full form. He found the killer within a week. He was the President's Advisor for Science and Technology, a well-known scientist and a close friend of the professor. He had been conspiring with an enemy country for a long time, selling his country's secrets. The orders of killing the professor were also given to him by that country. He was now being tried for both murder and treason.
On the lunch break, a car emerged from the parking lot of a corporate office. After going along several roads, it stopped outside the city cemetery. From it, exited a tall and handsome man in his late thirties, wearing a finely tailored suit and dark sunglasses. With heavy steps and slumped shoulders, he entered the cemetery and stood at the head of a fresh grave. He recited the Fatiha and then sat down on his haunches, as if whispering to the buried. Only this much came out of his trembling lips: "Professor, be my witness, I have avenged you." He stood up, wiped his tears, and walked back.