Olivia has changed her name and moved to a new town to try and escape a traumatic past. Upon receiving news her estranged mother has died she starts to sleep walk at night and remembering parts of her childhood. I'm unsure whether the narrator is reliable. Although she says the trauma was from being lost for 3 days and being trapped under water her fear, paranoia and the difficult relationship with her mother make you feel there is much more to her story than was thought at the time. Well written and intriguing I want to know what really happened to this mysterious woman.