Kamal Haasan has almost finalised cast and crew for his mega venture Viswaroopam, except the main heroine. Buzz is that the movie would start in just a couple fo weeks' time. Kamal Haasan's camp is confident of finding a heroine in the short span of time. It is said that they are holding talks with a host of Mumbai heroines, with Sonakshi Sinha opting out at the last moment.

Meanwhile, sources say the script has been completed and there are few flashback portions in the film that has come rivetting. Kamal Haasan besides acting and directing has chosen to pen the dialogues himself. It may be recalled that Selvaraghavan was touted to direct the film initially, but he pulled back at the last moment due to 'unavoidable reasons'. Hence the baton was passed to Kamal Haasan.