Possibilities

Two possibilities:-

1)So there is lot of confusion regarding Ayan's age,i think he must be Vandana's son but must not be fathered by Arjuns father.I guess after Arjun's mother died, Arjun's father married Vandana who already had Ayan so they can give the love and care of parents to their children.

2)Can Saanjh's bf be the actual mastermind behind all these murders and framing?I even strongly doubt he is someone from Maya's past,though i can be wrong.