Raven Rise (Pendragon, #9)

There's only one thing missing - Bobby Pendragon.

While Bobby remains trapped on Ibara, the battle moves to his home territory: Second Earth. Mark Dimond and Courtney Chetwynde are left on their own to defend Second Earth against the forces of Saint Dane. They must face off against a charismatic cult leader who has risen to power by revealing a shattering truth to the people of Earth: They are not alone.

The Convergence has broken down the walls. The territories are on a collision course. The final phase of Saint Dane's quest to rule Halla is under way.

And Bobby Pendragon is nowhere to be found.