Christopher Nolan's Tenet was set to be the buzziest movie of the year, but Micaiah Johnson's The Space Between Worlds is the perfect sci-fi novel to take your mind off the film's delay. Taking place on a dystopian Earth where travel through the multiverse is possible (but only if the other version of you isn't alive in the world you're travelling to), Cara is a prime candidate to collect data from other worlds due to her many counterparts having a bad habit of dying young. However, when one of her last remaining eight doppelgängers dies, Cara finds herself uncovering a conspiracy that could threaten to end the entire multiverse.