Tanu's Murder Mystery

I guess it is Aditi.....Probably she is threatened by the Agarwal familyor there could be a possibility that this could be plan plotted by Vijay Agarwal.

a)She was the first one to introduce Tanu to Andy through a magazine....and she was living with the Agarwal family, so she would probably know Andy.

b)When Andy was misbehaving at the party, that is when he was first introduced to the Agarwal family by Tanu, she kinda hid herself in the crowd, in addition Vijay Agarwal scolded Andy like he met for the first time and not like a father to a son and neither did he introduce Andy as his son.

c) How could Om Agarwal make milk shake....(I am not sure if he knows what is placed in the refrigerator...when he gets everything ready at the table for him by the ladies in the family and servants), therefore I am quite sure it is a lady..in addition, no servants work after midnight.

d) What was Aditi doing up so late at night...probably Tanu knew her secrets as well....maybe of some affair between Aditi and Andy...or maybe her relations with Vijay Agarwal and fly...

e) I guess in one of the episodes Aditi also mentions that she likes photography, so there is someone in the family who could have this chemical...

f) i guess Vandy massy either knows or she has seen something and is shocked because she keeps getting those nightmares....or there is something really strange about her..she seems so confused, nervous and scared...but yet I don't think she could kill Tanu, since she has been there when Tanu was growing...like a daughter....