The 13 Treasures ~ by Michelle Harrison

She couldn't remember the first time she had seen them, exactly. They had always been there. She had grown up chattering away to herself as her parents looked on - at first in amusement, then later with concern.
As the years passed, she had learned to lie convincingly. Talk of fairies did not wash well with adults once you were passed a certain age . . People didn't belive in what they couldn't see.

But You Don't Always Have To See To Believe

Though her mother cannot see the evil fairies that rouse Tanya from her sleep, torturing her at the slightest mention of their existence, they are as real to the thirteen-year-old as anything she's ever known. If she could wish them away, she would, but instead it is she who is sent away - to live at her grandmother's secluded countryside manor.
There is much to explore and even more to fear in the woods surrounding the estate. But the forest isn't the only source of dark secrets, and Tanya soon finds herself entangled in a mystery that could tap her in the fairy realm forever.

This is a beautifully dark book! I loved how Harrison showed that not all fairies are goody-goody, but sometimes have bite! They steal children, commit mischief and cause mayhem on a whim. They are not friendly, or pretty - and I love them all the more for it! I would recommend this book for ages 11 and up. If you thought this book was fantastic, then check out the who series!