The shooting of Papanasam, the official Tamil remake of Mohanlal's superhit Malayalam film Drishyam is going on at a fast pace! Currently the shoot is happening in Tirunelveli and news is that, after this the cast and crew of the film will head to Kerala in the first week of October for their next schedule. The scenes will be shot in the same house where the original version was shot. A few changes will be made to the place to make it look like a Tamil household.