It's the grand final and the last chance for one player to gettheir hands on £100,000. After weeks on the road, it allcomes down to this, but it's not going to be easy. The playerswill be put to the test as old clues resurface and olderrivalries heat up. A monstrous first challenge will give someplayers an advantage in the race to the final Destination X,but will it be enough? A nail-biting sprint sees a race aroundone of Europe's most iconic cities – to where X really doesmark the spot.