In his modest office above a school in Naraina Vihar in southwest Delhi, Dinanath Batra is wreathed in smiles. He’s been on the phone all morning, fielding questions from journalists. “I feel 84 years young”, he says. The reason lies on the chequered plastic cloth of the small coffee table in front of him—a mustard-yellow folder with the words “Penguin Book India Pvt. Ltd” printed boldly on the front and “Delhi Police” in the top left corner.