because he is too ashamed to acknowledge that he was sleeping drunk (i guess more than 6 pegs) when her daughter was slaughter next to her. Nupur Talwar also has an old addiction to sleeping pills. They have failed as a parent and now are too shocked and scared to react to anything. By the way I am still waiting to CBI's reply on previous query as to why the ACs were tempered with if their was no plan to kill Arushi on that unfateful night.