Upper World

"To have a book that marries real London life, time travel, and relativity in an illuminating and entertaining way is stuff I used to dream about. I had The Upper World in my hands until I finished it. So happy this exists." -- Daniel Kaluuya

"Fadugba's debut dazzles, particularly when it comes to dialogue--the London slang flows with ease. A riveting thriller that creatively incorporates scientific elements." -- Kirkus Reviews

"A time-twisting, mind-bending thrill ride. If I could read at the speed of light, I would have!" -- Holly Jackson, #1 New York Times bestselling author of A Good Girl's Guide to Murder

"An intense debut novel...The science is complex, but the central, emotional stakes are universal: Can we change the past? Dare we hope for a better future?" -- Booklist

"The Upper World took everything I thought I knew about physics, time, space, and energy, and twisted it into a new, electrifying story that I couldn't put down!" -- Brittney Morris, nationally bestselling author of Slay

"Exploring themes including fate, gang violence, and the ethics of time travel, debut author Fadugba uses physics theories to create an absorbing dual narrative with engaging voices." -- Publishers Weekly

"A mind-bending thriller that takes you to modern-day London and then twists reality back in on itself. Tenet has nothing on The Upper World." -- Maureen Johnson, New York Times bestselling author of the Truly Devious series

"So much is packed into this relatively short audiobook.... But at its heart, it is a story of connection: to ourselves, others, and our communities. Important and relatable for all." -- Booklist (starred review)

"Fans of Jason Reynolds and Neal -Shusterman won't be able to put down this electrifying debut." -- School Library Journal