The Last Kids on Earth and the Forbidden Fortress

Picking up after Quint and Dirk's Hero Quest, the Last Kids are happily reunited―but quickly faced with a monstrous new mission. Inside an other-dimensional fortress, the evil Thrull, alongside a vile new villain, is carrying out a sinister plan. Jack, Quint, June and Dirk must make their own plans to infiltrate the stronghold before Thrull gets any closer to completing the mysterious Tower, a structure that could ultimately spell doom for this dimension.

The Last Kids on Earth series:
The Last Kids on Earth
The Last Kids on Earth and the Zombie Parade
The Last Kids on Earth and the Nightmare King
The Last Kids on Earth and the Cosmic Beyond
The Last Kids on Earth and the Midnight Blade
The Last Kids on Earth and the Skeleton Road

And don’t miss the full-colour graphic novel:
The Last Kids on Earth: Thrilling Tales from the Tree House

The eighth book in the New York Times bestselling series with over ten million copies in print!