Arvind Kashyap Part 1 – The Case Begins The rain had been coming down on Kolkata for three days straight, the kind that didn’t wash the city clean but left it sticky and smelling of wet dust, fish, and petrol. Arjun Sen sat in his office above a shuttered sweet shop on Bentinck Street, nursing his fourth cup of watery tea and wondering whether he should pawn his old Nikon camera. Once, he had been the man behind front-page scoops, the journalist who broke the stories others were too scared to touch. Now he chased cheating husbands through dimly lit…