Ayan Mukerji drops in intriguing stills of Ranbir Kapoor, Alia Bhatt, Amitabh Bachchan, Nagarjuna and Mouni Roy from Brahmastra sets in 'Flashes of Time' series

Though the release date of his much-anticipated mythological fantasy film Brahmastra hasn't been announced, Ayan Mukerji is sending people into a zone of excitement by releasing some unseen BTS stills straight.....