In 2011, an ancient temple in Kerala, the Padmanabhaswamy temple in Thiruvananthapuram, made headlines when vast treasures were discovered in secret vaults under the temple. Gold, silver, gems and jewels on a scale that boggles the mind were stored in them. How did the treasure get there? Just how much wealth is there? And who does it all belong to now? This is the story of the richest temple in the world