There is more to this whole thing, I mean first they revealed that Chotima is the culprit
and then we realised that the hapless Shankar is also included in the crime game and the final revelation will be that Satyen is the king pin for all of this , otherwise, how will the creatives explain the male voice that called out for Alekh....so, as of now, its gonna be confusion, more confusion and more melodrama when Ranvir declares that Vasu is the killer and then, Vasu will be heartroken and realise that both her sons are no longer hers and stuff like this....after all this melodrama in the house, we will have the full mystery getting solved on the diwali nite(hopefully).
I dont understand why the creatives are taking this installment approach, I think the whole show is ruined bcoz, the creatives first tried to confuse us with names like Indrajeet and Vasu, and when they finally had to reveal the culprit, they had to settle with chotima's name, but this is no surprise at all, I'm sure, more than 50% of us knew that chotima was behind all this (although we secretly prayed it wasnt her).
With the way Bidaai was going in the last couple of months, I knew the creatives were going to have a damp squib like this tch tch tch :(((