OK. Another wild guess from me:-
Rama spots Nidhi on his way back home. He follows her and is shocked to see her going in to ShagMani's complex. He gets a doubt that Nidhi was Tisha. When he follows her, Nidhi somehow gets to know Raman is following her and both of them spot each other, she hides somewhere. When Raman goes in search of her, Nidhi comes back and drive away in his car, which is not locked.đđ. She drives it so fast, causes the accident. Later she calls up Raman and tells him that he is in trouble as she has caused an accident and his car is involved and if he tries to expose her, he would be in trouble. She might bring the pihu and Gulabo angle as well. When he comes back home, unable to find Nidhi, he sees the police and so many missed calls and when he gets to know about vandu's death, he immediately connected it and had a doubt that Nidhi could have killed her with his car. That is why there was no shock, rather a confused look on his face. May be that is why he asked that question "Are you sure? " to the police. đđ. So till yesterday, he is only aware that his car was involved in an accident and not sure that vandu was killed by it.
Now today ( I am yet to watch the episode, just from the short updates here), when police confirms that it was his car, he did not want to take a chance with criminal like Nidhi and hence accepting to the crime. He might be guilty of hiding about Nidhi to Ishita with the fear that Nidhi might endanger Pihu. I don't know how far it made sense, but just a random guess.
Edited by priyadarshini.r - 9 years ago