EXCLUSIVE: Haiwaan director Priyadarshan reveals how he helped Saif Ali Khan portray a visually challenged man

Haiwaan's trailer has finally been released, and it gives a closer look at Saif Ali Khan's role in the film. The trailer revealed that Saif is playing a visually disabled character who is being hunted by Akshay Kumar. This is the first time that Saif is playing the role of a…