Singularity

Singularity is a compelling science fiction novel about sixteen-year-old identical twins, Harry and Barry, who inherit their eccentric great-uncle's house. They discover a peculiar 'playhouse' on the property where the properties of time are dramatically altered. This discovery intensifies their already fierce sibling rivalry, especially with the arrival of a new neighbor, Lucy. The story explores themes of competition, the allure of power, and the profound consequences of choices, culminating in a decision that permanently reshapes their relationship. While the provided age range is 4-11, the complex themes and character ages (16) suggest it's better suited for older elementary to middle school readers who are ready for more mature science fiction and psychological depth.