**Sorry if this idea has already been proposed**
I really think that jai is actually sahil and that the third person is sahil. many of are in agreement that sahil didnt die and so am i. so the day that sahil "died" i think pia saved him and then she got him to get plastic surgery to look like jai and i mean she did have 2 months so he could have gained the weight and practiced in speaking like jai and getting jai's habits right. i think that jai walia was the one who has been with bani (but when bani saw jai as the burkha wali, it was actually sahil and from there on sahil has been acting like he's jai) pia has been telling sahil of the entire deal that has been going on in Walia Mansion. so on the day of bani's court hearing, pia probably told sahil (jai's look-a-like) what to say and how to act and they both may have kidnapped the real jai walia. this all may have been done to prove that "jai" loves pia and hates bani just like bani had thought when she found out about ONS and heard jai saying all those awful things to her. according to the new promo, bani is seeking revenge from jai and there will be a huge misunderstanding and so much chaos!! maybe i am just thinking too much. feel free to add comments!!