Police found Madeline Adamson wandering a remote island road on the morning of her fourteenth birthday. Whatever had happened to her was so traumatic that she’d blanked out the previous twelve hours. Eventually, her father committed her to a mental institution. Twenty-one years later, Madeline is still a patient at Lethem Park, and the story opens.
A new therapist has determined to confront the cause of her ‘dissociative amnesia’, starting a game of cat-and-mouse – he wants to get inside her story to build his career, she wants to get out of Lethem Park. The doctor seems antagonistic, but soon a suspicion arises: can we trust Madeline, or is she psychotic?