Keys to the Demon Prison

The demon prison Zzyzx has held the world's most dangerous servants of darkness since ancient times. Among its prisoners is Gorgrog, the Demon King. The Sphinx has plotted for centuries, and now he is close to gathering all five artifacts needed to open the prison.

Kendra, Seth and the Knights of the Dawn have to stop him. The threat is a calamity that could end the world, so every friend of light must join the effort. Their task is to find a safe home for the five artifacts before the Sphinx can claim them.

The search takes them well beyond the walls of Fablehaven. They travel to strange and exotic magical preserves around the globe, and in each one the end of a quest leads straight into another.

This is fantasy for younger readers, and it is the fifth and final book in the Fablehaven series. Allegiances are tested and confirmed, and secrets come out as the forces of light and darkness clash over the keys. Expect a story that moves from place to place and builds toward a desperate struggle at the close of the series.