Fablehaven

Trespassers will be turned to stone
For centuries, mystical creatures of all description were gathered to a hidden refuge called Fablehaven to prevent their extinction. The sanctuary is one of the last strongholds of true magic. Enchanting? Absolutely. Exciting? You bet. Safe? Well, actually, quite the opposite . . .
Kendra and her brother, Seth, have no idea their grandfather is the current caretaker of Fablehaven. Inside the gated...

Danger lurks everywhere.
Strange things are afoot at Fablehaven. Someone or something has released a plague that transforms beings of light into creatures of darkness. Seth discovers the problem in its infancy, but as the infectious disease spreads, it becomes clear that the preserve cannot hold out for long.
In dire need of help, the Sorensons question where to turn. The Sphinx has always given sound advice—but is he a traitor?...

Hours of crisis often call for sacrifice.
After many centuries of plotting, the Sphinx—leader of the Society of the Evening Star—is after the final artifacts needed to open the great demon prison, Zzyzx. If the legendary prison is opened, a tide of evil is certain to usurp control of the world.
In an effort to intercept the final artifacts, Kendra, Seth and the Knights of the Dawn race to strange and exotic preserves...