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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 Lock & Key

anchored on:science fictiontime travelour worldcontemporaryadventurousadventure+1 more

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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 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 in which a friendship — its making, testing, or loss — is the emotional center.
  • 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 about mourning — living through the death of a loved one and what loss does to the survivors.
  • 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 Time Travelers Never Die
                  Time Travelers Never Die

                  series · 2 books · 1996

                  similar bycontemporaryscience fictiontime travelour world+2 more

                  Time Travelers Never Die started life as a Jack McDevitt novella in the mid-1990s (Hugo- and Nebula-nominated) before he expanded it into a full novel over a decade later; the novella and novel are two forms of the same story rather than a sequel. It follows a small circle of people who gain access to working time travel and use it to step into the past, in McDevitt's characteristic register of curious, history-minded science fiction.

                • Cover of Artemis Fowl
                  Artemis Fowl

                  series · 15 books · 2001

                  similar bycontemporaryadventurousour world+1 more

                  Artemis Fowl is a series of eleven fantasy novels by Irish author Eoin Colfer, revolving around various members of the Fowl family. The first cycle, the Artemis Fowl series, consists of eight books, and the second cycle, The Fowl Twins series, is a trilogy. Both releases have received commercial success and positive critical reception in the children's literature genre, and also originated graphic novel adaptations. As of 2013, the novels have sold more than 21 million copies in 44 languages, and are one of the best-selling series of all time. In 2010, Artemis Fowl was voted by readers as their favorite Puffin Books title of all time.

                • Cover of The Chronicles of St. Mary's
                  The Chronicles of St. Mary's

                  series · 46 books · 2013

                  similar bycontemporarytime travelscience fictionour worldfunny+2 more

                  Jodi Taylor's Chronicles of St Mary's follows the disaster-prone historians of St Mary's Institute of Historical Research, who insist they don't 'time travel' but merely 'investigate major historical events in contemporary time' — usually while narrowly avoiding death and causing chaos. Beginning with Just One Damned Thing After Another, the comic time-travel series has grown to nineteen novels ranging across historical periods from the Cretaceous to the twentieth century.

                • Cover of My Teacher Is an Alien
                  My Teacher Is an Alien

                  series · 4 books · 1989

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                  My Teacher Is an Alien is a four-book science fiction children's book series authored by Bruce Coville. The titles include:My Teacher Is an Alien (1989) My Teacher Fried My Brains (1991) My Teacher Glows in the Dark (1991) My Teacher Flunked the Planet (1992)

                • Cover of Out of Time
                  Out of Time

                  John Marsden · standalone novel · 1990

                  similar bycontemporaryadventurousour worldtime travel+2 more

                  James, a strange, silent boy, makes the acquaintance of old Mr. Woodford, a physicist who constructs a mysterious black box, but when the box comes into the boy's possession, it draws him into a magical and dangerous world, in and out of time.

                • Cover of The Island of Dr. Libris
                  The Island of Dr. Libris

                  Chris Grabenstein · standalone novel · 2015

                  similar bybooks and readingcontemporaryadventurousour world+1 more

                  What if your favorite characters came to life? Billy’s spending the summer in a lakeside cabin that belongs to the mysterious Dr. Libris. But something strange is going on. Besides the security cameras everywhere, there’s Dr. Libris’s private bookcase. Whenever Billy opens the books inside, he can hear sounds coming from the island in the middle of the lake. The clash of swords. The twang of arrows. Sometimes he can even feel the ground shaking. It’s almost as if the stories he’s reading are coming to life! But that’s impossible . . . isn’t it?

                • Cover of The Accelerati Trilogy
                  The Accelerati Trilogy

                  series · 3 books · 2014

                  similar byadventurouscontemporaryscience fictionour world+2 more

                • Cover of Crosstalk
                  Crosstalk

                  Connie Willis · standalone novel · 2016

                  similar byfriendshipcontemporaryscience fictionour worldfunny

                  Crosstalk is a science fiction novel by Connie Willis, published in 2016. It is a romantic comedy that explores the intersection of telephones and telepathy. In a similar situation to Bellwether and Passage, the main character, Briddey Flannigan, is part of a larger institution who gets caught up in series of escalating events. Additionally, Crosstalk like Bellwether and Passage feature themes of neuroscience, communication and technology.

                • Cover of The Halloween Tree
                  The Halloween Tree

                  Ray Bradbury · standalone novel · 1972

                  similar byfriendshipcontemporaryour worldadventure+1 more

                  Eight boys gather on Halloween night to trick-or-treat with their ninth friend, Pipkin, only Pipkin never shows, having vanished on some errand that may cost him his life. A strange, black-robed guide named Moundshroud appears to lead the boys after him, and the chase turns into a journey through the history of the holiday itself: ancient Egypt, druidic Britain, Rome, medieval Paris, and the Mexican Day of the Dead, each stop peeling back another layer of how humanity has faced death and the dark. Ray Bradbury's Halloween novel doubles as a compressed history of the holiday's origins.

                • Cover of Danger Boy
                  Danger Boy

                  series · 4 books · 2001

                  similar byadventurousscience fictiontime travelour world+3 more

                • Cover of D. O. D. O. (Department of Diachronic Operations)
                  D. O. D. O. (Department of Diachronic Operations)

                  series · 2 books · 2017

                  similar byadventurousscience fictiontime travelour worldeurope+1 more

                  Neal Stephenson and Nicole Galland's D.O.D.O. novels center on the Department of Diachronic Operations, a covert U.S. government agency that discovers magic vanished from the world in the nineteenth century and sets out to use time travel to bring it back. The Rise and Fall of D.O.D.O. (2017) is followed by Master of the Revels, continuing the pair's earlier collaboration on The Mongoliad.

                • Cover of Tip and J. Lo
                  Tip and J. Lo

                  series · 2 books · 2007

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                • Cover of The Accidental Time Machine
                  The Accidental Time Machine

                  Joe Haldeman · standalone novel · 2007

                  similar bycontemporaryadventurousscience fictiontime travelour world

                  "Grad-school dropout Matt Fuller is toiling as a lowly research assistant at MIT when, while measuring subtle quantum forces that relate to time changes in gravity and electromagnetic force, his calibrator turns into a time machine. With a dead-end job and a girlfriend who has left him for another man, Matt has nothing to lose taking a time machine trip himself - or so he thinks."

                • Cover of David and the Phoenix
                  David and the Phoenix

                  Edward Ormondroyd · standalone novel · 1957

                  similar byfriendshipcontemporaryour worldadventure+1 more

                  David and the Phoenix is a 1957 children's novel about a young boy's adventures with a phoenix. It was the first published book by American children's writer Edward Ormondroyd.

                • Cover of Johnny Maxwell
                  Johnny Maxwell

                  series · 4 books · 1992

                  similar byour world+6 more

                  The Johnny Maxwell trilogy follows an ordinary British teenager who keeps ending up at the center of small-scale, largely unglamorous brushes with the fantastic: an old arcade game that turns out to house a real alien fleet, a haunted cemetery, and a WWII bomb that displaces him in time. Terry Pratchett wrote it as a departure from Discworld, aiming his humor and social observation at a contemporary setting and a young teenage cast. Only You Can Save Mankind, Johnny and the Dead, and Johnny and the Bomb make up the sequence.

                • Cover of The Kaiju Preservation Society
                  The Kaiju Preservation Society

                  John Scalzi · standalone novel · 2022

                  similar byadventurouscontemporaryscience fictionfunnyadventure

                  Covid lands Jamie with no job, no money and a lot of obligations. She'll take pretty much any job. After a detour through pizza deliveries, she says yes to a job handling large animals, that need protection. But when it comes to further details, everybody's very secretive. First stop: Greenland.

                • Cover of Lost in Cyberspace
                  Lost in Cyberspace

                  series · 2 books · 1995

                  completed

                  similar byfriendshipcontemporaryscience fiction+4 more

                • Cover of Cragbridge Hall
                  Cragbridge Hall

                  series · 3 books · 2013

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                • Cover of Mr. Lemoncello
                  Mr. Lemoncello

                  series · 3 books · 2013

                  similar bybooks and readingcontemporaryadventure+3 more

                • Cover of Infinity Ring
                  Infinity Ring

                  series · 8 books · 2012

                  similar byadventurousscience fictiontime traveladventureour world+1 more

                  Infinity Ring is a series of young adult science fiction adventure novels written by multiple authors, including James Dashner, Lisa McMann, Matt de la Peña, Matthew J. Kirby, and Jennifer A. Nielsen, in a similar fashion to The 39 Clues. It is focused on the adventures of Dak Smyth, Sera Froste, and Riq Jones as they try to fix changes in time through time travel.

                • Cover of An Absolutely Remarkable Thing / The Carls
                  An Absolutely Remarkable Thing / The Carls

                  series · 2 books · 2018

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                • Cover of Kid vs. Squid
                  Kid vs. Squid

                  Greg van Eekhout · standalone novel · 2010

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                  Spending the summer after sixth grade at his great-uncle's oceanside museum, Thatcher and local girl Trudy team up to help Shoal, one of the people of Atlantis cursed by a witch whose head still survives, and who has an army of monstrous creatures helping her.

                • Cover of Robots Rule!
                  Robots Rule!

                  series · 3 books · 2014

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                • Cover of Monster Squad
                  Monster Squad

                  series · 4 books · 2009

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