Another Little Piece by Kate Karyus Quinn is a dark young adult paranormal thriller (available June 11, 2013).
A girl stumbles out of the night wearing a garbage bag as a poncho. She has no idea where she is or how she got there. When the Oklahoma family who finds her call the authorities, a missing person report pings and her identity is revealed. The girl is Annaliese Rose Gordon, a teenager who disappeared one year ago from Buffalo, New York. On the night she vanished, she appeared at a party, covered in blood and screaming. No one had seen her since.
But the girl remembers none of this. She can’t explain where she’s been for the past year. She can’t explain the scar on her head or her short hair. Her mother and father pick her up, take her home, and try to reintroduce Annaliese to her love of chocolate, her best friend Gwen, and her love of family road trips.
The only problem is that the girl they’ve brought home isn’t Annaliese.