Good question.But there are many unanswerable assumptions,and honestly, everytime we're thinking about a rational solution to the puzzle,the writer and the CVs come out with the most irrational one.So sometimes I feel it's unnecessary to use our brains to work so hard.But,then again,we're so involved in this drama that,it is quite difficult to keep a bird's eye view at the matter.
I somehow feel that someone from Rishi's past,may be a rival,is behind his abduction;and Munna,Jhumpa,or Vidit are merely a set up .And yes,I agree with the view,as someone has mentioned it,that the master mind behind Rishi's abduction is not among these three characters.Lets just say, if Vidit is behind this plot,than the writer,or CVs have to show very strong grounds for his action;otherwise it will be seen as a waste of time for the audience,as well as the waste of skills of the actors.Whatever the suspense,I hope it is revealed quickly,so that the story can move forward.