Reason behind Mouni Roy's character in Brahmastra is being kept under wraps.

The most awaited movie Brahmastra is ready to go on floors this September. The flim stars Ranbir Kapoor and Alia Bhatt in the lead roles . The promotion of the film are well underway. But the audience was quick to notice that Mouni Roy missing from the promotion. The actress will be joining the team soon for the promotions. But the real reason is something else behind it. Mouni Roy plays a quintessential  role in the film. The makers of the film want to keep the audience in suspense about the main antagonist and what all she represent. Mouni Roy is the surprise element they want to keep under wraps to aid the story experience of the audience.

Brahmastra also stars Amitabh Bachchan and Nagarjuna in pivotal roles. The film will be released on 9 September.