To leverage renewed interest in the Da Vinci Code with the launch of the movie, Eurostar created a huge puzzle-solving online competition. This team decided that digital communications needed to be at the heart of the solution. To maximise creative impact, we came up with a campaign of three phases. Each phase exploits the creative potential of the medium for greatest impact.First off, unbranded teaser activity introduced the concept of a mysterious quest. The campaign then moved into a ‘reveal’ stage as Eurostar challenged the audience to “Join the Quest”. All ads used rich media and video elements to create user interaction and thus heightened engagement with the quest.