Without the permission of Dr. Talwar, how can servants dare to assemble and drink in one's house without his permission. Everything was planned by ultimate planner Dr. Talwar.
CBI wants to avoid its responsibility to end up case as soon as possible by fabricating unlinked story.
Only and only Dr. Talwar is the murderer, servants are used by him bacuse they are somewhere involved in any illegal activities and under threat they are speaking a baseless story.
