Nisha Kapoor The Monsoon Express pulled out of Mumbai Central just as the sky broke open with rain, sheets of water drumming against the station roof and streaking the glass panes of the luxurious coaches. Inside, the world was far removed from the storm—velvet upholstery, polished wood, and the quiet hum of attendants who glided between compartments. Wealthy passengers sipped wine or tea, their conversations blending with the clink of cutlery. Among them sat Rajiv Mehta, the diamond merchant whose reputation preceded him. He leaned back in his chair, heavy rings glinting as he raised his glass, speaking too loudly…