On the night of May 15, 1855, a shipment of gold bars and coins was sent from London to Paris, first via the South Eastern Railway and then on a ship across the English Channel. When the shipment arrived in Boulogne, France, the containers—all of which were locked and sealed—were found to be missing a large amount of the gold, worth about 12,000 British pounds at the time. The missing weight had been replaced with lead shot. A group of men was later arrested for the theft. How were they caught? Discuss
Source: The Free Dictionary