Akshay Kumar reveals how his police officer friends helped him prepare for psychopath role in 'Haiwaan'

Mumbai, September 4 (IANS) Bollywood superstar Akshay Kumar has spoken about his transformation into a negative character for his upcoming movie, 'Haiwaan', further adding how his friends in the police force help him in doing so.

He also spoke about taking on a darker role and shifting dynamics with co-star Saif Ali Khan in the movie.