A girl is found hiding in a secret room in a house being renovated after a terrible crime. For weeks she has survived by sneaking out at night, stealing food for herself and two dogs that are kept in the garden. She doesn't appear on any missing person's file, or match the DNA of any murder victim. Six years later, still unidentified, the same girl is living in a secure children's home with a new name, Evie Cormac, when she initiates a court case...