Fablehaven Book 1 By Brandon Mull

Fablehaven book 1 by Brandon Mull begins the exciting adventures of siblings Seth and Kendra Sorenson.

They're going to visit their Sorenson grandparents for what they think is a regular visit. Their parents are going to be on a trip and no one else can watch them. So off they go to their grandparent's house which is off in the woods down a long, long road. Things seem normal enough, except that Grandma Sorenson is strangely absent, there's a chicken rooming with them in their attic bedroom, and Grandpa has some strange and strict rules about not leaving the yard. Plus, there are really bright butterflies they've never seen before, and Grandpa Sorenson's employees are very strange and secretive. Just maybe Grandpa and Grandma (wherever she is) are keeping secrets from their grandkids! By the way, who is the strange, creepy lady who lives in a weird shack off in the woods?