Find the Missing Emerald Ring of Admiral Sir Cloudesley Shovell!
Unlucky Colin Nelson has had a column catastrophe. He took a tumble while putting up a new installation on a Trafalgar Square plinth, and nothing could break his fall! But, his luck is changing - on the way down, he managed to grab some old documents wedged into a crack, which point to Sir Cloudesley Shovell's missing emerald ring! Colin needs YOU to track down the priceless gem while he recovers. Do you have what it takes?