okay, first of all, it is a crime that this book hasn’t taken over bookstagram yet. this is one of the best sci-fi books i've read in a while, and i need more people to pick it up asap. it’s got everything: an immersive world, an action-packed plot, a badass protagonist out for vengeance, and a slow-burn sapphic romance that just starts to bloom by the end. if that’s not enough to convince you, let me break it down.
first off, the worldbuilding? insane. celestine feels real in a way that so many sci-fi settings don’t. every detail is so well thought out—the dusty frontier towns, the ruthless crime bosses, the looming presence of xypha tightening its grip on the planet. there’s a perfect blend of sci-fi and western aesthetics, from high-tech weapons to old-school saloons where you just know a fight is about to break out. the setting isn’t just there for the vibes (though the vibes are immaculate)—it actively shapes the story, adding layers of tension and desperation to alix’s journey.
speaking of alix—what a character. she’s a trans woman, a pilot, and absolutely fueled by rage, and i was so here for it. she’s morally grey in the best way possible, willing to do whatever it takes to survive and get revenge on the megacorporation that wronged her. and honestly? she’s right. i don’t care how messy she gets; i was rooting for her every step of the way. her band of misfits is just as compelling, each bringing their own skills, flaws, and secrets to the table.
the action in this book is relentless. from the very first chapter, it throws you straight into the chaos, and it does not let up. there’s never a lull—just when you think things might slow down, another twist, another fight, another impossible situation keeps you hooked. that fight with the thin man? still gives me chills just thinking about it.
and then there’s the romance. while the main focus is alix’s fight for freedom and revenge, the slow-burn connection between her and sora is so well done. sora, the more level-headed and compassionate one, is the perfect balance to alix’s sharp edges and all-consuming need for justice. their dynamic is subtle at first, but by the end, you feel how much they mean to each other. i really hope we get more of their relationship in the next book.
at the end of the day, in the valley, a shadow is everything i want in a sci-fi novel. gritty, intense, full of complex characters and a world that feels lived in. the representation is fantastic, the villains are genuinely hateable (in a way that makes the stakes feel real), and the themes of resistance, identity, and survival hit hard.
and honestly? all throughout reading this book, i kept thinking—i need this as a movie. a series. a comic. a graphic novel. everything. it’s that good. every fight scene, every tense showdown, every stunning moment of worldbuilding—it demands to be seen.
i seriously cannot recommend this book enough. if you love sci-fi with depth, action, and some well-earned rage, read this immediately.