Did I miss something, ? In today's episode Papa Hooda is still looking for the diary, meaning one between the mothers stole it, also yesterday's conversation between mom and mom in law of Adi hinted that everyone knew something and only kept Adi in delusion.
I'm suspicious on both the mothers but I feel mom in law stole it. Not because she wants to save Pooja but because she wants to keep Adi safe by not letting him know the truth.
Arjun still thinks Papa hooda stole it and he would be further shocked whenhe would get to know everyone are behind that diary.