Mohalal is on talk for a challenging role in his career ever. He is to portray framed ISRO scientist Nambi Narayanan for director Ananth Narayan Mahadevan ‘s upcoming flick Witch Hunt. The Mumbai based director recently met the scientist for locking up the project. And he is very much wants Mohanlal to essay the role of the protagonist. The scientist who introduced liquid-fuel rocket technology in India and was once charged for leaking defence secrets pertaining to rocket and satellite launches to foreign countries in 1994. The scientist was charged and was allegedly tortured. Although later he opposed valiantly and emerged successfully. Mohanlal also affirmed that talks are on progress yet nothing has been finalized till now.