Further forensic investigation reveals that marks from the fingers of five different people are on the door- which means the man was not alone, and likely murdered. A search begins for the locksmith who gave the victim the key that lead to his death. It turns out that the man had paid a locksmith 5 lakh rupees to make him that key. Why did he go to such a length for a key? How did it lead to his death? Will CID solve this case and find the killer? Watch this episode to find out now.