India, Aug. 25 -- Akshay Kumar is taking a much darker turn with Haiwaan, and the trailer gives a clear glimpse of just how sinister his character is. Directed by Priyadarshan, the action thriller reunites Kumar and Saif Ali Khan after 17 years, with the two actors on opposite sides of a dangerous cat-and-mouse game. After the teaser sparked curiosity last week, the trailer now introduces Saif as a visually impaired man who is forced to face a ruthless Akshay, who seems determined to hunt him down.

The 2-minute-34-second trailer sets up an eerie mood, with a growing sense of fear spreading across the city as a mysterious killer appears to be targeting people. Saif Ali Khan's character is shown visibly shaken as the situation around him s...