His directorial debut happened with a flick titled Terrorist while he also worked with star director Mani Ratnam's hit film Dil Se which dealt with the terrorism taking place in the North-East region of India. It's been heard that Santhosh's next film as a director is also going to be about terrorism.
It will deal with the Sri Lankan Tamil issue. If everything goes right, then Santhosh will opt to get a special permission from the Lankan Government to shoot the movie in the jungle of Sri Lankan.
Meanwhile at the moment, he is busy assisting Mani Ratnam for Raavan.