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Built on ISFDB, Wikipedia, Wikidata and Open Library. Curated reading orders carry their reasoning on the page; the rest follow publication order. Data sources & licenses

© Loreful · data: ISFDB · CC BY

More like Finity

anchored on:science fictionalternate historythriller & suspenseidentityparallel universemysterious+1 more

but

Mood

The mood the book leaves you in.

  • The reading experience is propelled by journeys, exploration, and physical risk; excitement and forward momentum dominate over dread or introspection.
  • Joy and loss are deliberately mixed; the resolution grants characters something real while taking something else away, leaving warmth and sorrow together.
  • The book demands work from the reader — dense prose, difficult structure, unfamiliar ideas, or morally uncomfortable material — as part of its intended effect.
  • Grim events, cruelty, or despair dominate the atmosphere, and the book does not soften them with comfort or comic relief.
  • The atmosphere is quietly unsettling — wrongness, unease, and the uncanny pervade the book without necessarily escalating into overt horror.
  • The book is built to move the reader; character feeling is foregrounded and major scenes aim at a strong emotional response.
  • Humor is a primary aim and the prose plays for laughs — comic situations, wit, or dialogue produce sustained comedy, not occasional levity.
  • The book insists that things can improve; effort and decency are shown to matter, and the arc bends toward better outcomes even through hardship.
  • The book teaches as it goes — real facts, history, science, or craft are conveyed in enough depth that learning is part of the reading experience.
  • The book is designed to uplift and motivate, presenting perseverance or achievement in a way that invites the reader to aspire or act.
  • The overall register is cheerful and easygoing; stakes are kept gentle and the book avoids dwelling on pain or dread.
  • Withheld information drives the experience; the book sustains enigmas and secrets the reader wants resolved, whatever its genre.
  • The book is contemplative and inward-looking, giving more weight to thought, memory, and meaning than to external events.
  • The book works as comfort reading — low tension, a soothing pace, and an atmosphere the reader can unwind in.
  • Grief, loss, or melancholy set the dominant register, and the book lets sorrow stand rather than resolving it into comfort.
  • Sustained suspense is the point; the book keeps the reader braced for what happens next through danger, pressure, or impending revelation.
  • Playful invention and charm define the register — fanciful conceits, light absurdity, and a narration that delights in its own oddity.

About

What the story runs on.

  • Stories in which extraterrestrial beings are central — as characters, cultures, or the object of the plot.
  • Stories about venturing into space to explore — survey missions, astronauts, and the frontier of the unknown beyond Earth.
  • Stories about minds with paranormal abilities — telepathy, telekinesis, precognition, empathy — and how societies handle those who have them.
  • Stories structured as a quest — a journey undertaken to find, deliver, or destroy something of great import.
  • Stories in which staying alive against nature, catastrophe, or scarcity is the central problem.
  • Stories of lovers kept apart by law, family, faith, or station, where the obstacle to love is the plot.
  • Stories of growing up — a young protagonist crossing from childhood into adult knowledge and responsibility.
  • Stories about who a character truly is — self-discovery, doubled lives, and the search for a self.
  • Stories in which a buried family truth — hidden parentage, crimes, or shames — surfaces and reorders the present.
  • Stories driven by maneuvering for power — factions, conspiracies, and statecraft conducted in shadow.
  • Stories in which war itself is the subject — combat, occupation, and what warfare does to soldiers and civilians.
  • Stories organized around investigating a killing — the case, the clues, and the pursuit of the killer, in any genre's clothing.

Shelf

Where it sits in the library.

    • Fiction built on magic or other supernatural elements that have no scientific explanation.
    • Secondary-world fantasy at large scale, where the fate of nations or the world turns on the protagonists' struggle.
    • Fantasy set in a recognizably modern city or contemporary world where the supernatural intrudes on everyday life.
    • Fantasy that blends in horror's atmosphere and imagery, keeping a fantastical frame around grim or frightening material.
    • Action-driven fantasy following warriors or rogues with personal stakes against sorcerous threats, rather than world-spanning conflicts.
    • Fantasy set in a real historical period or a close analogue of one, with magic woven into the era.
    • Fantasy in which protagonists cross from the ordinary world into another world through a portal or similar passage.
    • Fiction that retells or reworks a traditional fairy tale in a new form or setting.
    • Fantasy drawing directly on myths, legends, and folklore, retelling them or building on their figures and logic.
    • Fantasy of ghosts, vampires, shapeshifters, psychics, and similar phenomena, usually set in an otherwise ordinary world.
    • Fiction mixing science-fictional trappings with overtly magical or impossible elements in one setting.
    • Low-stakes fantasy emphasizing comfort, community, and everyday pleasures over conflict and peril.
    • Speculative fiction of pervasive moral ambiguity, violence, and cynicism that rejects heroic conventions — fantasy and SF alike.
      • Fiction that extrapolates from science and technology — future societies, space travel, or speculative inventions — within at least nominally natural laws.
      • Science fiction of interstellar scope — starships, galactic polities, and adventure across star systems.
      • Science fiction committed to scientific rigor, where technical plausibility constrains the story.
      • Science fiction centered on armed forces and warfare, told largely from a military point of view.
      • Science fiction of networked, corporate-dominated near futures, pairing high technology with social decay.
      • Science fiction styled on nineteenth-century steam-powered technology, often in a Victorian or pseudo-Victorian setting.
      • Fiction depicting an oppressive or catastrophic society, presented as a warning.
      • Fiction set after civilization's collapse, following survivors in the ruins of the old world.
      • Fiction in which characters move between past and future, and the mechanics or consequences of that travel drive the plot.
      • Fiction exploring a world where a historical event went differently and history diverged from ours.
      • Science fiction about humanity's first encounter and communication with an alien intelligence.
      • Science fiction in which extraterrestrial forces attack or occupy Earth and humanity resists.
      • Fiction whose primary aim is to frighten or unsettle the reader through dread, menace, or the monstrous.
      • Horror of vast, indifferent, incomprehensible entities before which humanity is insignificant, in the Lovecraft tradition.
      • Horror of decaying houses, buried family secrets, and oppressive atmosphere in the Gothic literary tradition.
      • Horror centered on hauntings and the returning dead.
      • Horror located in the mind — paranoia, obsession, and unreliable perception rather than external monsters.
      • Horror built around the reanimated dead and survival amid their outbreaks.
      • Horror defined by explicit, transgressive gore that refuses to cut away from violence.
      • Speculative fiction of the strange and uncanny that resists both natural explanation and standard genre categories.
      • Fiction organized around solving a crime or puzzle, typically following an investigator toward the identification of a culprit.
      • A puzzle-first mystery that lays out clues so the culprit's identity can be deduced before the reveal.
      • Crime fiction of moral ambiguity, fatalism, and hard-edged style, set among the corrupt and the doomed.
      • A mystery following the realistic routines of police work — forensics, interviews, and case-building.
      • A gentle mystery with an amateur sleuth, a small community, and violence kept off the page.
      • A mystery set in a past era, where the investigation works within that period's methods and society.
      • Fast-paced fiction driven by imminent danger, pursuit, or high-stakes conspiracy, built to sustain tension.
      • A thriller of espionage — agents, tradecraft, and intelligence services in conflict.
      • A thriller centered on lawyers and the courtroom, where litigation carries the suspense.
      • A thriller driven by detailed contemporary or near-future technology, often military or scientific.
      • A thriller whose tension comes from mental states and manipulation between characters rather than external action.
      • Fiction whose central plot is a romantic relationship and its development toward an emotionally satisfying resolution.
      • Romance in which one or both partners are supernatural beings, blending fantasy elements into the love story.
      • A fantasy-romance hybrid in which the romantic arc and the fantasy plot carry equal weight.
      • Romance set in a past era, with courtship shaped by the period's society and manners.
      • Romance set in the present day, without supernatural or historical elements.
      • Fiction set in a real past period, where the historical setting materially shapes characters and events.
        • General and literary fiction emphasizing prose style, character interiority, or formal ambition over genre plot conventions.
        • Fiction in a realistic world where magical events occur and are treated as ordinary, in the tradition of Latin American literature.
        • Fiction that ridicules people, institutions, or society in order to criticize them.
        • Fiction of dreamlike, irrational imagery and logic that breaks from realistic representation.
        • Fiction that plays with narrative convention through metafiction, fragmentation, and self-reference.
        • Fiction propelled by journeys, exploration, and physical peril, where action and survival carry the plot.
        • Adventure fiction of ships and seafaring — naval engagements, voyages, and life at sea.
        • Fiction of the American frontier West — gunmen, ranchers, and lawmen, typically in the late nineteenth century.
        • Fiction centered on soldiers, campaigns, and the experience of warfare, historical or imagined.
          • Fiction written primarily to amuse, using comedic situations, wit, or parody as its organizing principle.
            • Multi-generational fiction following a family or dynasty across decades, with inheritance and kinship as the through-line.
              • Fiction whose world runs on explicit game mechanics — levels, stats, and skills that characters can see and exploit.
                • Fiction about costumed or superpowered heroes and their conflicts with comparable villains.

                Practical

                How long a commitment, whether it stands alone, and whether it has finished.

                Tap a chip to ask for it · tap again to rule it out · once more to clear. Numbers show what would be left.

                • Cover of Dark Matter
                  Dark Matter

                  Blake Crouch · standalone novel · 2016

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                  Jason Dessen, college physics professor, husband and father, is kidnapped and taken to a parallel universe where his counterpart had dedicated his life to inventing a method of traveling between an infinity of parallel universes.

                • Cover of The Oracle Year
                  The Oracle Year

                  Charles Soule · standalone novel · 2018

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                  Awakening from a dream with more than one hundred predictions about the future in his head, an unassuming Manhattan bassist becomes one of the world's most powerful men and hides his identity behind an online persona that is targeted by greedy corporations and dangerous enemies.

                • Cover of Stamping Butterflies
                  Stamping Butterflies

                  Jon Courtenay Grimwood · standalone novel · 2004

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                  From acclaimed author Jon Courtenay Grimwood comes an exotic new novel that defies expectation at every turn. A mystery, a thriller, and a cutting-edge sci-fi adventure all in one, Stamping Butterflies bends time, genre, and consciousness itself to tell the spellbinding story of two worlds, three lives, one future--and the question upon which everything depends: who is dreaming whom....From Marrakech to China's Forbidden City, from a doomed starship carrying a cryogenically preserved crew to an island prison camp, the fate of the world is being played out in the minds of two dreamers. One, a would-be assassin obsessed with enigmatic equations, has set out to kill the U.S. President. The other is a young Chinese emperor ruling thousands of years in the future. Each believes he is dreaming the other. One must change the future; one must change the past. And time is running out for both.Caught in the maelstrom is a motley cast of characters, each an unwitting key to the ultimate fate of both worlds: Moz, a resourceful young Marrakech street punk, and his half-German girlfriend, Malika; Jake Razor, a self-exiled rock star; and psychiatrist Katie Petrov, who finds herself racing against a looming death sentence to pry free the secret of her condemned patient--a secret with the power to restore hope to the future...or stamp it out forever.From the Trade Paperback edition.

                • Cover of The Infinitive of Go
                  The Infinitive of Go

                  John Brunner · standalone novel · 1980

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                  Amazon: The first practical matter transmitter was a success, or so everyone thought. In spite of paranoid security restrictions, Justin Williams and Cinnamon Wright, co-inventors of the device, counted on it to revolutionize civilization and gain them an honored place in history. But the first long-distance field test with a human being - a diplomatic courier carrying a vital message - somehow misfired when the courier killed himself on arrival at his destination. To prove his faith in his invention - and to escape charges of sabotage - Justin had himself "posted" thousands of miles. He came through unchanged. It was the world that was somehow different.

                • Cover of The Merchant Princes
                  The Merchant Princes

                  series · 14 books · 2004

                  similar byparallel universetensepolitical intriguealternate historyscience fiction

                  The Merchant Princes is a science fantasy and alternate history series of nine novels by British writer Charles Stross. In the series, there exist a number of parallel worlds, all of which are on the same geographical Earth but with different societies at different points of development. Members of a certain bloodline can travel between these worlds along with their immediate possessions. The series largely follows Miriam Beckstein, a technology journalist raised in a familiar "normal" Earth, who discovers she was born in a parallel world and is a member of this bloodline. She quickly becomes entangled in political maneuvering and assassination plots with her estranged family. Miriam uses modern technology and investigative journalism to attempt to stay a step ahead.

                • Cover of Friday
                  Friday

                  Robert A. Heinlein · standalone novel · 1982

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                  Friday is a 1982 science fiction novel by American writer Robert A. Heinlein. It is the story of a female "artificial person", the eponymous Friday, genetically engineered to be stronger, faster, smarter, and generally better than normal humans. Artificial humans are widely resented, and much of the story deals with Friday's struggle both against prejudice and to conceal her enhanced attributes from other humans. The story is set in a Balkanized 21st century, in which the nations of the North American continent have been split up into a number of smaller states.

                • Cover of The Confabulist
                  The Confabulist

                  Steven Galloway · standalone novel · 2014

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                  Alternate history. Harry Houdini, in addition to the life you know, is also a secret spy for the U.S. Treasury Department, advisor to the American military, confidant of a Russian spy, and faker of his own death.

                • Cover of Who?
                  Who?

                  Algis Budrys · standalone novel · 1958

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                  Who? is a 1958 science fiction novel by American writer Algis Budrys, set during the Cold War. It was originally a short story, inspired, as its author claimed, by a Kelly Freas painting he had seen in the offices of the magazine Fantastic Universe, and published in that magazine in April 1955.

                • Cover of Departure
                  Departure

                  A. G. Riddle · standalone novel · 2014

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                  "The world's past and future rests in the hands of five unwitting strangers in this definitive edition of A. G. Riddle's time-traveling, mind-bending speculative thriller. En route to London from New York, Flight 305 suddenly loses power and crash-lands in the English countryside, plunging a group of strangers into a mysterious adventure that will have repercussions for all of humankind.Struggling to stay alive, the survivors soon realize that the world they've crashed in is very different from the one they left. But where are they? Why are they here? And how will they get back home? Five passengers seem to hold clues about what's really going on: writer Harper Lane, venture capitalist Nick Stone, German genetic researcher Sabrina Schroeder, computer scientist Yul Tan, and Grayson Shaw, the son of a billionaire philanthropist.As more facts about the crash emerge, it becomes clear that some in this group know more than they're letting on--answers that will lead Harper and Nick to uncover a far-reaching conspiracy involving their own lives. As they begin to piece together the truth, they discover they have the power to change the future and the past--to save our world. or end it. A wildly inventive and propulsive adventure full of hairpin twists, Departure is a thrilling tale that weaves together power, ambition, fate, memory, and love, from a bold and visionary talent"--

                • Cover of Blade Runner Universe
                  Blade Runner Universe

                  series · 6 books · 1968

                  similar byidentityscience fiction+2 more

                  Philip K. Dick's 1968 novel Do Androids Dream of Electric Sheep? follows bounty hunter Rick Deckard as he tracks escaped androids through an irradiated, near-abandoned San Francisco, using the hunt to probe questions of empathy and what separates human from machine. The novel became the basis for Ridley Scott's 1982 film Blade Runner, and Marvel Comics later published an illustrated adaptation of that film. Together the two trace the story's path from prose original to screen and comic-page adaptation.

                • Cover of The Next Time I Die
                  The Next Time I Die

                  Jason Starr · standalone novel · 2022

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                  ● Steven Blitz tries to rescue a woman from a forced kidnapping and promptly gets stabbed. When he awakes in the hospital, he finds that he has awoke in an alternate reality. — MLB

                • Cover of Double Star
                  Double Star

                  Robert A. Heinlein · standalone novel · 1956

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                  Lorenzo Smythe, the excellent yet unemployed actor, meets Dak Broadbent in a bar. Broadbent hires Lorenzo for an unspecified role, and hustles him onto a rocket ship. Broadbent turns out to be an assistant to the famous interplanetary politician and leader of the Expansionist party: John J. Bonforte. Bonforte, however, has been kidnapped by the political opposition on Mars, and due to Lorenzo's physical similarity to Bonforte, his staff wants Lorenzo to impersonate the politician for an important Martian ceremony.

                • Cover of Shadow Web
                  Shadow Web

                  N. M. Browne · standalone novel · 2008

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                  Jessica Allendon is bored and Googles her name. Weirdly, she finds another girl, same age, same name, also living in London. They arrange to meet. At the designated time and place, Jess sees the girl, shock registering on both their faces as they realise they look identical. They shake hands and in that instant are catapulted into each other's worlds. Jessica finds herself somewhere which looks like the London of 50 years ago, but the year is still 2008. In this parallel London, the history is different, key war memorials are missing, and the Jessica whose life she now inhabits was involved in a dark and sinister conspiracy. Jess must convince everyone she is the same girl, at all costs, if she wants to get back to her London - alive.

                • Cover of Flashforward
                  Flashforward

                  Robert J. Sawyer · standalone novel · 1999

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                  Flashforward is a science fiction novel by Canadian author Robert J. Sawyer first published in 1999. The novel is set in 2009. At CERN, the Large Hadron Collider accelerator is performing a run to search for the Higgs boson. The experiment has a unique side effect; the entire human race loses their consciousness for about two minutes. During that time, nearly everyone sees themselves roughly twenty-one years and six months in the future. Each individual experiences the future through the senses of their future self. This "flashforward" results in countless deaths and accidents involving vehicles, aircraft, and any other device needing human control at the time of the experiment. The novel was adapted into the 2009 television series FlashForward.

                • Cover of Teixcalaan
                  Teixcalaan

                  series · 2 books · 2019

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                  Arkady Martine's space opera duology follows Mahit Dzmare, ambassador from the small, independent Lsel Station, as she arrives in the vast Teixcalaanli Empire to investigate her predecessor's death and finds herself caught up in the empire's own succession crisis. A Memory Called Empire and A Desolation Called Peace pair court intrigue with Mahit's conflicted, outsider fascination with an empire she can't help admiring.

                • Cover of The Space Between Worlds
                  The Space Between Worlds

                  Micaiah Johnson · standalone novel · 2020

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                  The Space Between Worlds is a 2020 science fiction novel by Micaiah Johnson. It is Johnson's debut novel. The novel takes place in the near future, where travel between parallel universes is possible.

                • Cover of The Ferryman
                  The Ferryman

                  Justin Cronin · standalone novel · 2023

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                  The Ferryman is a 2023 dystopian fiction novel by Justin Cronin. The protagonist, Proctor Bennett, is a titular "ferryman", responsible for transporting elderly citizens to be reborn. Proctor gradually realizes that his utopian life is not what it seems. The Ferryman is Cronin's first novel since 2016's The City of Mirrors.

                • Cover of Bad Monkeys
                  Bad Monkeys

                  Matt Ruff · standalone novel · 2007

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                  Bad Monkeys is a 2007 psychological thriller novel by American author Matt Ruff. It received mixed reviews in national media, but was subsequently optioned for film.

                • Cover of The Last Universe
                  The Last Universe

                  William Sleator · standalone novel · 2005

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                  Sleator is at his sci-fi best with this quantum thriller, now available in paperbackIn this gothic, sci-fi thriller from a master storyteller, Susan and her wheelchair-bound brother, Gary, discover a mysterious maze in the vast gardens of their isolated home. Planted by a scientist uncle who disappeared long ago, the maze offers seemingly endless routes and choices. The teenagers discover that each turn they take alters their world in some way. Sickly Gary sees a chance to change his fate; Susan sees that they may both be lost forever.

                • Cover of Before I Go to Sleep
                  Before I Go to Sleep

                  S. J. Watson · standalone novel · 2011

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                  Before I Go to Sleep is the first novel by S. J. Watson, published in the spring of 2011. It became both a Sunday Times and The New York Times bestseller and has been translated into over 40 languages. It has become a bestseller in France, Canada, Bulgaria and the Netherlands. It reached number 7 on the U.S. bestseller list, the highest position for a debut novel by a British author since J. K. Rowling. The New York Times described the author as an "out-of-nowhere literary sensation". He wrote the novel between shifts whilst working as a National Health Service (NHS) audiologist.

                • Cover of Endgame Enigma
                  Endgame Enigma

                  James P. Hogan · standalone novel · 1987

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                  From back cover Bantam paperback November 1988: IT MIGHT BE A STEP BEYOND STAR WARS... AND ONE STEP CLOSER TO WORLD WAR III. It is the near future. With its power and influence waning, the Soviet Union has launched Valentina Tereshkova, a giant space station capable of housing 12,000 citizens, into orbit around the earth. But is the colossal off-world colony the peaceful Utopian experiment it's alleged to be? Or is it the last desperate weapon of a crumbling superpower bent on global domination? U.S. computer scientist Paula Bryce and agent Lew McCain are sent to learn the truth -- only to find themselves trapped in the station's awesome prison facility. With a brilliant and eccentric group of dissident inmates, Bryce and McCain seek to unlock from within the secret of the mysterious station. But how will they ever report their findings? In an international powder keg, even unconfirmed suspicions could force a terrifying first strike... while the only hope for mankind rests with two Americans trapped in a prison they can't possibly escape...

                • Cover of Beyond the Barrier
                  Beyond the Barrier

                  Damon Knight · standalone novel · 1964

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                  From the front flap of the Doubleday first edition: "Gordon Naismith was a physics professor at a large California university. The year was 1980, and by means of the university's duplicator he could personally teach in nine different classrooms simultaneously. Naismith was an average man in all but two respects: the reflexes were extraordinarily quick, and four years before in a plane crash he had lost all memory of his earlier life. Neither difference seemed important until one day a very unusual student in one of his classes asked a disturbing, extracurricular question: "Professor, what is a zug?" The question triggered a series of violent incidents, and soon Naismith himself, as well as the police, were beginning to wonder if the duplicator had reproduced him a tenth time. The answer lay ten thousand years in the future."

                • Cover of Feedback
                  Feedback

                  D. L. Richardson · standalone novel · 2012

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                  ● "Three teenagers have one thing in common: they're kidnapped two weeks after receiving life-saving organ transplants. Their abductor is a man who believes the memories of the host are retained in the organs. Extracting these memories is just the beginning. Something else is awakening inside their minds. If they trust this voice they might save the world. But it might also get them killed." ― paraphrased from this book's product page on Amazon.com as of 2024-04-03.

                • Cover of Embassytown
                  Embassytown

                  China Miéville · standalone novel · 2011

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                  In the far future, humans have colonized a distant planet, home to the enigmatic Ariekei, sentient beings famed for a language unique in the universe, one that only a few altered human ambassadors can speak. Avice Benner Cho, a human colonist, has returned to Embassytown after years of deep-space adventure. She cannot speak the Ariekei tongue, but she is an indelible part of it, having long ago been made a figure of speech, a living simile in their language. When distant political machinations deliver a new ambassador to Arieka, the fragile equilibrium between humans and aliens is violently upset. Catastrophe looms, and Avice is torn between competing loyalties—to a husband she no longer loves, to a system she no longer trusts, and to her place in a language she cannot speak yet speaks through her.