"What Is Not Yours Is Not Yours" is a collection of short stories by Helen Oyeyemi, known for her magical realism and innovative storytelling. The stories are connected by the recurring image of keys and locks, which serve as symbols of secrecy and hidden truths. Each story explores the theme of love and relationships, and the characters are often navigating issues of identity, sexuality, and personal freedom. In one story, a puppeteer falls in love with a woman who may or may not be a puppet herself. In another, a young woman must confront the truth about her past and her family's secrets. Oyeyemi's writing is lyrical and imaginative, blending elements of fairy tales, folklore, and mythology to create a rich and complex world. The stories are linked together by subtle threads, inviting readers to make connections and draw their own conclusions. Overall, "What Is Not Yours Is Not Yours" is a fascinating and thought-provoking collection that showcases Oyeyemi's unique voice and vision.