In an effort to stop the Sphinx from opening the demon prison Zzyxx, Kendra, Seth, and the Knights of the Dawn race to find the exotic artifacts and keep them out of the Sphinx's control.
Since ancient times, the great demon prison Zzyzx has protected the world from the most dangerous servants of darkness, including Gorgrog, the Demon King. After centuries of plotting, the Sphinx is on
Package Includes The Following Paperbacks In The Fablehaven Series: Fablehaven Rise Of The Evening Star Grip Of The Shadow Plague Secrets Of The Dragon Sanctuary Keys To The Demon Prison
