Yes you are absolutely right.The whole thing is a drama.And the artist s are krishna,rajkumar, and the comic hero shambhu a imaginary character in the play and the director is Dr.Rajesh Talwar and the producer is Dr.Nupur Talwar. Dr.rajesh said that he had taken drinks and sleeping pills but What about Nupur? How she couldn't hear anything when her only daughter was attempted to rape by Rakumar and also murdered in the next room. Either Arushi was dumb Or Nupur and Rajesh were deaf for that particular moment of period. What the hell is CBI doing? May be Krishna is one of the culprit but what about another two? What my heart is saying that may Dr.Rajesh involved in some illegal thing like extra marital affair or in a kidney racket or in a sex racket OR Dr.nupur involved in the above Or both of them were involved in the above. Accidentally Arushi came to know that. That is why they killed her. One of the most important thing is that both the parents used to lock the room of Arushi from the out side WHY?? If it a daily habit then how could they forget to lock the room? Do you forget to brush your teeth? Though Hemraj called the three then How it was possible that both Dr.Rajesh and Nupur didn't know about taht where in a house there were only four member inside in it the security is so tight. After committed the crime they ran away by the terrace which was locked inside. How it was possible? From the front door it not possible unless until Dr.Rajesh or NUpur opend the door.