The Upper World by Femi Fadugba is a fascinating debut novel that combines science fiction, mystery, and social commentary in a unique and engaging way. The story follows Esso, a teenage boy from Peckham in London, who discovers that he has the ability to access different points in time by jumping between parallel universes. Using this power, he tries to prevent the murder of a girl named Rhia, who he meets on a train platform, and uncover the dark secrets that led to her death. One of the strengths of The Upper World is its complex and multi-layered plot, which weaves together themes of race, class, family, and personal responsibility. Fadugba does an excellent job of balancing the science fiction elements of the story with the emotional and psychological depth of the characters, creating a narrative that is both intellectually stimulating and emotionally resonant. Another standout feature of the book is its diverse cast of characters, who come from a range of cultural and socioeconomic backgrounds. Esso, who is Nigerian-British, navigates the challenges of growing up in a disadvantaged community while also dealing with the weight of his newfound abilities. Rhia, who is Jamaican-British, grapples with her own personal demons as she tries to find her place in the world. And the various adults in their lives, including Esso's mother and Rhia's father, are portrayed with nuance and complexity, adding depth and richness to the story. Overall, The Upper World is a thought-provoking and engaging read that will appeal to fans of science fiction and contemporary fiction alike. Fadugba's writing is clear and concise, and his storytelling is masterful, drawing readers in and keeping them hooked until the very end. I would highly recommend this book to anyone looking for a fresh and innovative take on the time-travel genre, as well as those interested in exploring the intersection of race, class, and identity in modern-day Britain.