Atten-årige Rosemary evaluerer, hvordan hele hendes ungdom blev præget af tilstedeværelsen og tvangsfjernelse af en indtagende chimpanse, der hemmeligt blev betragtet som et familiemedlem og hvem Rosemary elskede, som en søster

What if you grew up to realise that your father had used your childhood as an experiment? Rosemary doesn't talk very much, and about certain things she is silent. She had a sister, Fern, who vanished from her life in circumstances she wishes she could forget. And it's been ten years since she last saw her beloved older brother, Lowell. Now at college, Rosemary starts to see that she can't go forward without going back