Koontz Dean. The Mask

A beautiful young girl appears out of nowhere. A teenager with no past, no family – no memories. Carol and Paul were drawn to her. She was the child they’d never had. Most mothers would die for such a darling little angel. And that’s what frightened Carol most of all…
Then the hauntings begin - ghastly noises in the dead of night, a bloody face in the mirror,and the razor sharp ax. Where has Jane come from? Is she just an orphan in need of love? Or is she hiding something more sinister? Who is the girl behind the mask?