The Blair Witch Project meets Imaginary Girls in this story of sisterhood turned toxic, imaginary monsters brought to life, and secrets that won't stay buried.

Sixteen-year-old Skye is done playing the knight in shining armor for her insufferable younger sister, Deirdre. And moving across the country seems like the perfect chance to start over as someone different.

In their isolated new neighborhood, Skye manages to fit in, but Deirdre withdraws from everyone, becoming fixated on the swampy woods behind their house and building monstrous sculptures out of sticks and bones.

Then Deirdre disappears.

And when something awful comes scratching at Skye's window in the middle of the night, claiming Skye's the only one who can save Deirdre, Skye knows she will stop at nothing to bring her sister home.