A girl is missing. Five years old, taken from outside her school, she has vanished, traceless.
The police are at a loss; her parents are beyond grief. Their daughter is lost forever - perhaps dead, perhaps enslaved.
But the biggest mystery is yet to come: one week after she was abducted, Anna is returned.
She has no memory of where she has been. And this, for her mother, is just the beginning of the nightmare . . .