O.M Chapter 1 trailer promises a gritty action thriller; Dhanush, Mammootty and Sai Pallavi lead the cast
The trailer of O.M Chapter 1 faced delays following censor board issues over the film's title and came out hours after the intended launch. The film, starring Dhanush, Mammootty, Sreeleela, Sai Pallavi, releases in theatres on November 20.