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Robin Sloan Books in Order

Explore Robin Sloan books in order, with quick summaries, related series, an author bio, and simple where-to-start tips for his curious fiction.

Last updated: July 7, 2026

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Robin Sloan books in publication order

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6 books

Annabel Scheme

by Robin Sloan

2009

In an alternate San Francisco where the digital and the occult overlap, detective Annabel Scheme and her new AI Watson tackle a case involving dead musicians, missing gamers, and a powerful tech mogul. Fast, odd, and sharply funny.

Ajax Penumbra: 1969

by Robin Sloan

2012

In San Francisco, August 1969, young Ajax Penumbra arrives hunting a legendary book that may bring fortune or disaster. His search leads him through dead ends and into a narrow all-night bookstore where a much larger mystery begins.

Mr. Penumbra's 24-Hour Bookstore

by Robin Sloan

2012

After losing his design job, Clay Jannon takes the night shift at a peculiar San Francisco bookstore where customers borrow mysterious books instead of buying them. His curiosity leads to codebreaking, old secrets, and a warm clash between dusty knowledge and modern tech.

Sourdough

by Robin Sloan

2017

Lois Clary is a burned-out software engineer whose life changes when two restaurant owners leave her their lively sourdough starter. What begins as stress relief turns into a funny, strange dive into baking, community, and Bay Area food culture.

The Suitcase Clone

by Robin Sloan

2022

Heartbroken and stalled before college, James Bascule gets pulled into a strange wine-country job: smuggle a cutting from a legendary grapevine. The caper sends him across Europe and opens another hidden corner of Sloan's shared universe.

Moonbound

by Robin Sloan

2024

Eleven thousand years in the future, a village boy named Ariel finds an artifact from an earlier civilization, a sentient AI that becomes his guide. Their journey opens into a grand, playful quest full of strange creatures, deep history, and big questions.

Where to start with Robin Sloan

If you want the core connected universe: Mr. Penumbra's 24-Hour BookstoreAjax Penumbra: 1969SourdoughThe Suitcase Clone
If you want the easiest first taste: Sourdough
If you want a short detective story: Annabel Scheme
If you want the widest, weirdest scale: Moonbound

Annabel Scheme books in order

Explore this series
  1. Book cover for "Annabel Scheme"

    Annabel Scheme

    by Robin Sloan

    2009Annabel Scheme, Book 1

Annabel Scheme books in chronological order

  1. Book cover for "Annabel Scheme"

    Annabel Scheme

    by Robin Sloan

    2009Annabel Scheme, Book 1

Mr. Penumbra's 24-Hour Bookstore books in order

Explore this series
  1. Book cover for "Ajax Penumbra: 1969"

    Ajax Penumbra: 1969

    by Robin Sloan

    2012Mr. Penumbra's 24-Hour Bookstore, Book 2
  2. Book cover for "Mr. Penumbra's 24-Hour Bookstore"

    Mr. Penumbra's 24-Hour Bookstore

    by Robin Sloan

    2012Mr. Penumbra's 24-Hour Bookstore, Book 1
  3. Book cover for "Moonbound"

    Moonbound

    by Robin Sloan

    2024Mr. Penumbra's 24-Hour Bookstore, Book 3

Mr. Penumbra's 24-Hour Bookstore books in chronological order

  1. Book cover for "Mr. Penumbra's 24-Hour Bookstore"

    Mr. Penumbra's 24-Hour Bookstore

    by Robin Sloan

    2012Mr. Penumbra's 24-Hour Bookstore, Book 1
  2. Book cover for "Ajax Penumbra: 1969"

    Ajax Penumbra: 1969

    by Robin Sloan

    2012Mr. Penumbra's 24-Hour Bookstore, Book 2
  3. Book cover for "Moonbound"

    Moonbound

    by Robin Sloan

    2024Mr. Penumbra's 24-Hour Bookstore, Book 3

Standalone Robin Sloan books

  1. Book cover for "Sourdough"

    Sourdough

    by Robin Sloan

    2017
  2. Book cover for "The Suitcase Clone"

    The Suitcase Clone

    by Robin Sloan

    2022

Author bio

Robin Sloan was raised in Troy, Michigan, and like a lot of future novelists, he started as a public library kid. He has said the Troy Public Library gave him his foundation, and you can feel that early love of shelves, systems, and discovery running through his fiction.

At Michigan State University, Sloan studied economics and co-founded the literary magazine Oats. He did not go straight from school into a classic writer's life. Instead, he spent years working where media and technology met, a path that ended up shaping his books just as much as any workshop would have.

After college he worked at the Poynter Institute, then at Current TV, and later at Twitter. In his own telling, those jobs were all connected to figuring out the future of media. That mix of curiosity about old forms and new tools became one of his signatures.

He came to fiction by making things in public.

In 2009, Sloan used the then-new platform Kickstarter to fund Annabel Scheme, a novella about a detective in a strange San Francisco where the digital and the occult sit side by side. He has said the real gift of that project was not just money, it was proof that readers were out there waiting. That early push helped him leave full-time tech work and take writing more seriously.

His breakout book, Mr. Penumbra's 24-Hour Bookstore, began as a shorter piece he published online. Expanded into a novel, it became a bestseller and introduced the qualities readers still come to Sloan for: puzzles, secret societies, warm friendships, and a very specific kind of optimism about books and technology living in the same room. If you like stories about curious people building strange contraptions and chasing old mysteries with new tools, this is usually the place to start.

He followed that with Sourdough, which shifts from books to food without really leaving his core interests behind. The novel follows an overworked programmer who stumbles into baking, microbes, and Bay Area community, and readers tend to love its mix of workplace comedy, gentle weirdness, and genuine affection for making things by hand. Later, in Moonbound, Sloan zoomed way out, writing a far-future adventure that still feels recognizably his: playful, idea-heavy, and interested in how stories survive across huge stretches of time. Even the shorter Ajax Penumbra: 1969 shows the same habits of mind, blending a caper, a literary mystery, and a love of hidden networks.

He likes characters who tinker.

Across Sloan's work, a few themes show up again and again: apprenticeship, collaboration, secret knowledge, and the overlap between analog craft and digital life. His settings often include bookstores, labs, kitchens, archives, and workshops, places where people are learning by doing. Even when the plot turns toward conspiracy or fantasy, the emotional center is usually simple: smart people trying to make sense of a complicated world together.

These days, Sloan splits his time between the San Francisco Bay Area and the San Joaquin Valley of California. Alongside writing, he makes California olive oil, which somehow feels exactly right for him. His books are full of ideas, but they are also full of work, texture, and the pleasure of making something real.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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