My observations on the case as an independent observer:
The murders might have taken place due to two very different scenarios.
Case 1: Motive was robbery and the girl and servant were victims.
Case 2: Parents killed their daughter and tried to make it look like the servant killed her. But accidentally killed him too in the process when things went wrong.
Theory for case 1:
Lets say robbery was motive. The servants friends had planned to rob the house that night. So when the servant allowed them inside the house, they must have had some whiskey first and then locked the door of the parents room while the servant was drunk. While locking the girls room she might have accidentally opened it and was stabbed or killed to keep her from waking up her parents.
The drunk servant on seeing the girl being stabbed/ killed must have tried to protect her and was done away too in the process. With two bodies lying around them one am put the girl in her bed and then the men both dragged the servant to the terrace and locked it supposing the key was already in the lock.
In all this they forgot to rob the place or decided not to rob the place and instead make a run to safety.
This story explain the following doubts I had -
1. Why were the parents rooms locked from outside?
2. Why was the servant killed in the house and then dragged to the terrace?
3. Why was the terrace locked from inside and who has the key to the lock since the police had to break the door to get to the body?
What it does not answer is:
1. Didn't the parents hear noises and wake up when their daughter and the servant were being killed?
2. Was anything reported missing from their house?
3. Why didn't the neighbors smell the decomposing body and alert the police? During this time the parents had gone to the Ganges as reported by their lawyer in the "Worse than a daughter" link. So they have an alibi.
4. Why did it take 2 full days for the servants body to be discovered? Didn't any of the neighbor's see the servants body lying on the terrace (from their terrace supposing the houses nearby have a view to the other houses terrace) in these two days?
Theory for case 2:
The parents together with a third person wanted to kill their daughter for reasons best known to them and make it so that the nepali got the blame. Why three people and not husband and wife
alone? Because see the doubts in case 1. Their door was locked from outside.
1. Obviously if they were inside the locked room, then a third accomplice must have locked it from outside after the murders took place and then made his way back to his house after shutting the
front door.
2. It would be impossible for the husband and wife to overpower the nepali guy while slitting his throat by themselves.
3. It then explains why his body was dumped on the terrace. Since their motive was to make it look like the servant killed their daughter, hiding the servants body was important so that the police could go on a wild goose chase while they indirectly got an alibi by going to the Ganges.
This answers the doubts in case 1. It does not answer the following doubts how ever:
1 - Motive for the killing.
I cannot in any way believe it to be a honor killing. No one would make plans to kill their 14 year daughter in advance. Unless there was a very big argument and the kid was killed by mistake and the servant was killed in the confusion too. Then the third person was called to make it look like a robbery/ assault case.
2. If they had pre planned the murder, who is the 3rd person involved?
This is the biggest puzzle. Who is this 3rd person who has managed to evade the police and media till now. Why are the parents (if they are involved) not disclosing this persons name and sheltering him?
End of theory. All this can go for a toss based on actual evidences of the scene of crime. All in all a very intriguing case.
