A biopic can be a risky territory and its casting can be the biggest challenge. From body language to mannerisms, actors need to get into their parts with conviction to ensure acceptance. And upcoming film SANJU seems to be hitting the bull`s eye. Whatever we saw of Ranbir Kapoor as Sanjay Dutt in the film`s trailer is unbelievable. But even the film`s supporting actors have put in a lot of hard work to get their individual roles correct. And one such role is of Manisha Koirala who is playing the legendary actor and Sanjay Dutt`s mother Nargis in SANJU.