10 Books to Read in September 2026: Alternate realities, borrowed bodies, and futures worth questioning.

Item 01: Exit Party

First up, Exit Party by Emily St. John Mandel.

This is the book we would hand to someone who wants the literary end of science fiction but still wants the speculative idea to matter. Ari Waker comes out of prison into a broken 2031 Los Angeles. At a party, people disappear and someone seems to have a double. From there, the story brings alternate realities into contact with political repression. What interests us is the question behind that setup: how differently could the same people live under a different version of their country?

A book review by Kirkus praises the connection between the imagined worlds and the novel's ethical questions. That is a useful reason to look beyond the intriguing setup. Our one hesitation is about the shortlist itself: we have several books playing with reality this month. We would start with this one if the political consequences are what draw you in. That combination earns it the opening place in our ten.

Item 02: Ply

Second is Ply by Hernan Diaz.

This one sounds huge, and maybe a little intimidating, so here is the simple version. It is for readers who like literary fiction that builds a future economy from one concrete thing: power. Electricity is scarce, people steal it, store it, sell it, and gather around it, and then the story opens toward science that may bend reality itself.

Writing at Shelf Awareness, Harvey Freedenberg calls this an ambitious book with a strong imagination behind it, and says the young woman at its center keeps it grounded as the plot grows complicated. His practical advice is to accept the science rather than try to work it out. We would recommend it to readers happy to take their time with an unfamiliar world. The attraction for us is how an everyday need, keeping the electricity flowing, can shape a whole society.

Item 03: Under Story

Third, Under Story by Chloe Benjamin.

This is our bridge between the literary and genre picks. It begins with Antarctica, a scientist, a strange light called the Arc, and an anti-universe theory that might make the past reachable. What catches our attention is the emotional question attached to that idea: if the universe offered you one impossible second chance, would you take it?

Good Morning America made it the September book-club pick, which suggests to us that it could travel beyond genre readers. The book review in Publishers Weekly credits Benjamin with building the reversed-time world convincingly, then says the part that really holds you is the couple trying to repair what they lost. We would put this in front of someone who wants the emotional stakes to be as important as the physics.

Item 04: Scion

Fourth is Scion by James Islington.

After the quieter literary books, this is where we would turn for action. The rich can buy more years of life, and killing them has become a legal line of work. Azure is an altered human with an AI assistant, but his next assignment requires him to protect an elderly woman. For us, that reversal immediately gives the setup somewhere to go. What happens when someone trained to kill becomes responsible for keeping a target alive?

Writing at Novel Notions, Petrik Leo rates it highly for pace and twists once it settles, while warning that the opening stretch takes a while to find its footing and that this is a short, tightly focused book rather than a sprawling epic. The Guardian's review roundup also recommends it, while noting that the ending leaves room for more installments. We would choose it when you want momentum, with that expectation about closure. The rule that wealth can buy you more years and also make you a legal target gives us something to think about between the fights.

Item 05: Massif

Fifth, Massif by Garth Nix.

This is our space-opera pick. Imagine trying to run an interstellar military campaign when your transport is an enormous living mountain with purposes of its own. Earth and Mars have taken their conflict into other star systems, but a ship's crew starts asking why these beings carry humans in the first place. That uncertainty is what draws us in. How much control do you really have over a war when you do not understand what gets you to the battlefield?

The Guardian's review roundup recommends the adventure. A book review by Will Swardstrom at FanFiAddict gives us a more specific caution: he struggled with the early military sequences, then found the later discoveries much more engaging. We would keep that in mind before starting. The possibility of an alien agenda behind human expansion is still enough to put this on our list.

Item 06: Bonobo

Sixth is Bonobo by You-Jeong Jeong, translated by An Seon Jae.

This is a discovery pick that gives us a lot to think about. After an accident, a primatologist finds herself sharing a bonobo's mind and encountering memories of the animal's life. The premise makes the usual distance between observer and subject impossible to maintain. We are interested in what happens to someone's sense of responsibility when another being's suffering becomes something they experience from within.

In a book review at Chicago Review of Books, Leah Rachel von Essen finds a hopeful direction in the connections the characters form, even with the cruelty the story depicts. We would recommend this to readers interested in minds, bodies, and the obligations between them. Our reason for choosing it rests on those consequences; we would not go in expecting a technical explanation of consciousness transfer.

Item 07: Fold Catastrophes

Seventh, Fold Catastrophes by Peter Watts.

This is our pick for readers who want the science-fiction idea turned all the way up. These stories explore what might happen when technology interferes with behavior, when unfamiliar life confronts human assumptions, or when intelligence creates problems it cannot solve. There is plenty here to interest us, especially when a story makes us reconsider something we thought we understood about a mind or a body.

In his book review at A Deep Look, Dave Hook recommends the collection and values Watts' notes about how the stories came together. He also makes clear that some of the ideas take concentration to follow. We would expect this to be among the densest reads in our ten. It stays because working through that difficulty can be part of the pleasure for a hard-SF reader.

Item 08: The Passing of the Dragon and Other Stories

Eighth is The Passing of the Dragon and Other Stories by Ken Liu.

Ken Liu is our short-fiction anchor. A story collection is harder to pitch in one line than a novel, but that is also the attraction: thirteen speculative pieces where the big ideas can change shape from one story to the next. We are interested in that room to move between science fiction and fantasy, and between questions about art, perception, and technology.

The Book Marks review aggregator reports favorable reception. That tells us about the response to the collection; it is not a separate review by Book Marks. Our reason for choosing Liu here is range. We would pick this when you want to finish a story, sit with its question for a while, and come back to something different the next evening.

Item 09: The Strangers

Ninth, The Strangers by Naomi Alderman.

This is our most contested inclusion. A writer dealing with personal loss takes the first photograph of a previously unknown animal, the mimmoth. As attention to the creatures grows, her private experience becomes entangled with a much larger question about humanity's place in the world. We are drawn to that collision between an intimate loss and a discovery everyone wants to interpret.

But a book review at Tar Vol On is divided: it finds the grief and the personal material compelling, yet says the second half comes apart, and that anyone hoping for an explanation of the mimmoths will not get one. That is a real reservation. We are keeping this as an editorial bet on the premise and Alderman's work. We would put it lower on your reading list if you need a tightly resolved speculative story.

Item 10: Precious Children

Tenth is Precious Children by Mary G. Thompson.

This is our small-press pick, and its premise is hard to shake. Wealthy parents can license copies of their children to other families. If their own child dies, they can reclaim a replacement and have their child's memories overwrite the person already living there. We keep coming back to the child on the other side of that contract. Someone else's promise of getting their family back depends on erasing yours.

Trish Matson's book review at Skiffy and Fanty recommends the novel, although she found Thompson's previous science-fiction book more affecting. Her account also makes clear that the children are capable of resisting the roles assigned to them. That possibility earns our attention as much as the disturbing setup. We would put this in front of readers who want a concrete question about whose rights a new technology protects.