I agree with both @rachufan & @Riansh.I had always said from the start right when the series started that both Vansh & Kabir has the potential to be the Deep of this season & while Kabir's game has been exposed Vansh is yet to be exposed.
His casual reaction towards D Souza's death & multiple attacks on Ridzi even after Ragini was revealed to be alive makes this a classic plot of trapping the Spy in her own game.Had Vansh felt for her truly then why is he not finding out or doing a silent investigation of his own to find the perpetrators?
Its not that Vansh never knew that there were traitors behind his back willing to take him down.He had that cart-wheel depicting every photo of his family member along with Ridzi.Vansh knows clearly that what kind of a guy his sibling Aryan is or even his own sister Ishani? He seems to be clueless regarding his own mother who plots behind his back to usurp his property?
Painting wala incident toh Siya ne bataya tha Vansh ko warna shayad woh bhi pata nahi hota Vansh ko.Even Aryan seems to be a step ahead his brother include another sibling Kabir RaiSinghania too.