but my theory is..
it turns out Rajdeep survived the fire, and he came back and kidnapped Pari when she was 10 years old, and Rajdeep showed Pari that Nandini was his first wife and brainwashed her thinking that Rajdeep is truly her father. And that's how he murdered Mauli, Kunal and Ishaan? idk how the hell do adults in their late 40s all 3 of them die "naturally" 😕