I don't know but can it be possible that....
Some properties in Park Road belonged to Bani's parents and it was taken away from them. Someone else sold that property to Jai and Roshni, and they didn't know. While the construction going on, Bani's mom and dad came to plead Jai n Roshni not to take the property from them....But Jai already invested alot of money in that property....and that's why he gave probably couple of million to bani's father and told him to settle down with that money, while going back Bani's mom was killed with the construction work.........and after that Bani's father took his three daughter to Mount Abu, because it was their grandparents house and lived there....
I don't know but I am just trying to figure out what is the raaz behind park road...........what u guys think?