"Really deep under the earth on the border of France and Switzerland lies a track 17 miles long--the world's largest particle collider. The collider is built by CERN, a scientific organization for nuclear research sponsored by 20 countries in Europe. But secretly, CERN is also an Ekaterina stronghold. Most of the research done at CERN is public, but there's also classified Ekaterina Clue research going on behind the scenes. And those 17 miles of tunnels? Let's just say they are a good place for hiding things."