Actor-filmmaker Kamal Haasan says the strength of his forthcoming Tamil thriller "Papanasam", which is the remake of Malayalam hit "Drishyam", lies in its script because it is tried-and-tested and has proven successful.

"It's a script that has been tried-and-tested in several languages and has successfully worked every single time. This proves the strength of 'Papanasam' lies in its script," Haasan told.

He also added that it's a film where even the smallest character is very crucial from the story's perspective.

He plays a cable TV operator in the film, which is directed Jeethu Joseph, who also helmed the original.

Set against the backdrop of Thirunelveli, the characters in the film speak Nellai accent.

"Writers Jeyamohan and Suka need to be credited for helping us with the accent. Their knowledge about the place and language was quite helpful to us. Even if a word was slightly mispronounced, they'd stop us immediately," he said.

Kamal also heaped praise on director Joseph, who despite working on the original, was open to suggestions in the remake.

Actress Gauthami makes a comeback after a long gap as Kamal's wife in the movie, which has already been remade in Telugu and Kannada, while the Hindi version is due for release.

"Papanasam" is scheduled to hit the screens on July 3.