Chapter 1:  It was the sort of evening that wrapped Mumbai in a damp silence—one of those monsoon nights when the rain doesn’t roar, but hisses steadily, like a whisper of secrets meant to be hidden. The streetlights near Colaba Causeway flickered through the drizzle, casting shimmering reflections across the wet tarmac. Viraj Mehta, the 42-year-old diamond merchant with a reputation as clean as the stones he traded, checked his Rolex for the fourth time as he exited his office building. He had ended his day like any other: signing off ledger sheets, taking calls from Dubai, and checking shipments…