As per Krishna's narco analysis, he claims that the cell phone of Hemraj was destroyed and cut into pieces...ABSOLUTE LIE!!!!! If that were the case, how come Rajesh Talwar called up on Hemraj's cell phone at 6AM the next morning and the call was recieved?? It was cut in 2 secs flat but if cell had been cut into pieces, it would have become dead...clear that Krishna is lying!!
Then where are the cell phones and the murder weapon?? WITH THIS MYSTERIOUS MAN SHAMBHU WHO IS RIGHT NOW NOT IN NOIDA!!
Now all the pieces of jigsaw puzzle fit in....Vijay Mondal locks the Talwars up so that Shambhu gets time to escape with murder weapon and cell phones from Noida....just to buy that addtional 15/20 minutes to make good his escape...
Man who carried out the crime : Rajkumar Man who is in possession of murder weapon/cells : Shambhu(out of Noida) Man who bolted the Talwars door : Vijay Mondal(he stays in same building) Man who is misleading the CBI to protect the mastermind : Krishna Mastermind : A doctor couple