Again a murder mystery like Tript's???

There must be some importance to the khanjar Karan presented to Mandira. After all this will she use that and kill someone...may be Juhi Thakral and through the blame on Mihir or someone else?? Finally Juhi will be still alive just liek Tripti's case? There must be something with that deadly knife..otherwise jsut like that they wont introduce such a knife.

What do u think?