Fablehaven  rise of the evening star

At the end of the school year Kendra and her brother seth, find themselves going back to Fablehaven, a refuge for magical creaters. Grandpa Sorenson the caretaker invites three spechialists a potion master, a collector of magical relics, and a trapper of mystical creatures to help protect the property of society of the evening star, an ancient organization determind to infiltrate the preserve and steel a hidden artifact  of great power. There is short time left to stop it the evening star is storming the gates.If the artifact gets into the wrong hands, it could mean downfall of other preserves and possibly the world. Will Kendra learn to use her fairy gifts in time? Will Seth stay out of trouble? will they overcome paralyzing fear?