A theory for the Dhruv innocence sach.
The King had a particular signature mark he'd give enemies or traitors (think something like the Zorro one).
Tara spots that very mark on someone working in the castle one fine day. Then investigates, and finds clothes akin to Dhruv in that person's possession.
That is a good theory.
The potential proof of Dhruv holding the knife has made every body believe, that he has killed Maharaj. And that's why they are not even thinking about some other scenario, infact they hadn't a proper investigation of king's death .
Bold : May be not the clothes . But in this way , Tara can atleast use her brain and try to find out what actually happened that day .
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