Mumbai Oct 5: "Ittefaq" will not be promoted by lead pair Sidharth Malhotra and Sonakshi Sinha as producer Karan Johar believes it would be difficult to talk about the whodunit without spilling plot details. The trailer of the film, which is a remake of the 1969 film of the same name that featured Rajesh Khanna, Madan Puri and Nanda in lead roles, was launched today. The film is directed by Abhay Chopra and also stars Akshaye Khanna in the role of a cop. "There will be no promotions as you never know what the actors or the director might say, what if they say anything by mistake. So, we have decided to keep them away from promotions, no interviews nothing. It's a producer's film," Johar said. "It is difficult to maintain the mystery of such films. It's going to be for the first time that we will have no promotions for the film from the actor's perspective," he said. Johar said it was great to revisit the thriller as he has always been a fan of the original film. "I have seen it three to four times and I am a big fan of it. I also saw this one (the remake) while while the editing was going on... It is a true adaptation, it is not a straight copy. It is different from the original." Produced by Red Chillies Entertainment and Dharma Productions, the thriller is set to open in theatres on November 3.