There are possibilities of the group entering without any noise.
1. Hemraj was the conduit, he helped them enter without any noise. Either opened the door or allowed entry through terrace. The CBI checked the terrace route, and one could enter without the security guards knowing. 2. The parents are reportedly in deep sleep, either due to sleeping pill or due to alcohol. (May be their room was also bolted from outside.)
3. The girl must have been gagged. With Hemraj colluding, a sleeping girl being gagged is quite possible. Even if Hemraj did not participate in the heinous act, Krishna is naming two more persons - Rajkumar and Shambhu.
4. None of us have seen the post mortem report or forensic report and we are speculating based on what little we know or we second guess! So, let us wait for CBI to formally reveal its findings.
I tend to believe the parents are innocent. Otherwise, by now they would have cracked under the pressure of CBI questioning. One of the two could have attempted ending their lives. If they had any real motive to kill their daughter and servant, they would not have done it at home. So, I strongly believe the parents are not involved. They have undergone tremendous trauma, irreplaceable loss of a loved one, and loss of their reputation. Will they ever recover fully from this?
