The Code is a three-part documentary about maths in the world around us, presented by Prof. Marcus du Sautoy. Hidden in the show and on the web were clues to a treasure, which was won on September 10th 2011 at Bletchley Park by Pete Ryland. This short film shows how the finale played out. See www.bbc.co.uk/tv/features/code/ for more information or to play the treasure hunt yourself.