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  • Zero Day Threat: A space opera adventure (The Ungovernable Book 1)

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Zero Day Threat: A space opera adventure (The Ungovernable Book 1)

4.4 out of 5 stars (580)

"Spectacular and thrilling! Olson's debut novel is filled with compelling characters and endless excitement." -SD Simper, author of the Fallen Gods series

She’s lost her ship, lost her job, lost her reputation, and is on the run from the law.

Jez is a damn good pilot, and she’s always worked alone. Until she got picked up for smuggling, that is. Now she’s an ex-con and ex-employed, and there are plenty of people with old scores to settle. So when a mysterious stranger in a battered pilot's coat comes to her with an offer that sounds too good to be true, she reluctantly agrees to listen.

All she has to do is fly one little job.

Four ex-convicts. One charismatic mastermind. And the most dangerous heist the System has ever seen.

Firefly meets Ocean’s Eleven in R.M. Olson’s fast-paced, kick-ass, wickedly fun space opera series, The Ungovernable. Grab a copy and join the crew.

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There are 9 books in this series.

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From the Publisher

Zero Day Threat: A space opera adventure (The Ungovernable Book 1)
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Inhuman (The Dark Between Stars Book 1)
Customer Reviews
4.4 out of 5 stars 580
4.4 out of 5 stars 57
4.3 out of 5 stars 250
4.9 out of 5 stars 13
Price $4.99 $4.99 $4.99 $4.99
sub-genre space heist alien first contact naval/military sci-fi horror
Tone funny, lighthearted lighthearted; some heavier topics suspenseful, adventure, some heavier topics suspenseful, creepy, some heavier topics
Read this if you've always wanted to see: Firefly X Ocean's Eleven The Expanse X The Crocodile Hunter Pirates of the Carribean in space Space ghosts and other scaries
Space pirates no data no data
Twisty politics no data no data
Space-crime no data
Set in the same world no data no data
Diverse cast Queer, neurodivergent, non-white characters Queer, neurodivergent, physical disabilities, non-white characters Queer, neurodivergent, physical disabilities, non-white characters Queer, neurodivergent, non-white characters
Found family
Scrappy underdogs fighting the system

Product details

  • ASIN ‏ : ‎ B088C4FYPN
  • Accessibility ‏ : ‎ Learn more
  • Publication date ‏ : ‎ May 15, 2020
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 1.2 MB
  • Screen Reader ‏ : ‎ Supported
  • Enhanced typesetting ‏ : ‎ Enabled
  • X-Ray ‏ : ‎ Not Enabled
  • Word Wise ‏ : ‎ Enabled
  • Print length ‏ : ‎ 316 pages
  • ISBN-13 ‏ : ‎ 978-1777177805
  • Page Flip ‏ : ‎ Enabled
  • Book 1 of 9 ‏ : ‎ The Ungovernable
  • Best Sellers Rank: #576,115 in Kindle Store (See Top 100 in Kindle Store)
  • Customer Reviews:
    4.4 out of 5 stars (580)

About the author

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R.M. Olson
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R.M. Olson writes feel-good space opera featuring diverse casts, found families, and loads of action. R.M. has ridden the Trans Siberian railway, jumped off the highest bungee jump in the world, gone cage-diving with great white sharks, faced down a charging buffalo bull, and knows how to milk a goat. Currently they reside in Alberta, Canada with their four children, three cats, and a dog the size of a small bear. R.M. goes hiking and skiing more often than they probably have time for, eats more chocolate than is probably good for them, and reads more books than is probably prudent.

Customer reviews

4.4 out of 5 stars
580 global ratings
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Customers say

Customers find this science fiction book engaging with well-written content and fast-paced action. They appreciate the phenomenal story with first-rate plot twists, and one customer notes how the backstories explore the interconnectivity of human actions. Customers like the character development, with one review highlighting the incredibly complex main cast.
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23 customers mention character development, 21 positive, 2 negative
Customers find the characters engaging, with one review noting the main cast is incredibly complex.
...Interesting characters each with much to reveal in future installments.Read more
...Fast moving, holds your interest, great characters - this book has it all. Going for #2 now!Read more
Good characters, good mystery about them all. Could use a little smoother transitions and gradual development but overall it was very entertainingRead more
...a great job of creating a world populated with interesting, complex characters....Read more
23 customers mention engaging, 22 positive, 1 negative
Customers find the book very entertaining, particularly appreciating its fun tech elements, and one customer describes it as great escapism.
Great read, fast paced could not put down. If you like space opera adventures this series is just for you.Read more
...read past occasional wrong word choices and homonyms, it's a very entertaining book.Read more
...Bottom line I enjoyed the book. Great job.Read more
...Fast moving, holds your interest, great characters - this book has it all. Going for #2 now!Read more
11 customers mention content, 11 positive, 0 negative
Customers enjoy the book's content, particularly its fast-paced action and lots of movement throughout. One customer notes how the backstories explore the interconnectivity of human actions, while another appreciates the inclusion of queer perspectives.
Characters with depth, fast-paced action, lotsa fun tech, and multiple books in the series? C'mon! What more da' ya' want?!Read more
If you like sci-fi, action and characters that give 100% despite a chequered past - this is for you....Read more
...There is plenty of action, especially during the actual mission, and by the end, the mismatched group has meshed into a great team....Read more
The characters are well developed. Interesting premise and lots of action. You should read this book. I couldn’t put it down....Read more
10 customers mention story, 10 positive, 0 negative
Customers enjoy the story of this science fiction heist novel, praising its plot twists, with one customer noting how the various plot threads work well together.
Great story. Character development was so smooth. Flow of story lines and how the plots came together Worked. Bottom line I enjoyed the book....Read more
The characters are well developed. Interesting premise and lots of action. You should read this book. I couldn’t put it down....Read more
...While the plot is well developed and engaging, it is the depth of characterization that elevates this novel from "very good" to "excellent"!Read more
...errors in a book would have had me knock off two stars, but I loved the story so much that I went ahead and only knocked one off....Read more
8 customers mention pacing, 7 positive, 1 negative
Customers enjoy the pacing of the book, describing it as fast-paced.
Great read, fast paced could not put down. If you like space opera adventures this series is just for you.Read more
Fast moving, relatable science fiction. A real adventure with believable characters. It was a great ride on a fun story....Read more
Action and adventure await you on almost every page in this fast-paced novel....Read more
The writing is good enough that doesn't matter. The pace is cracking and the dialogue is entertaining....Read more
5 customers mention writing quality, 4 positive, 1 negative
Customers appreciate the writing quality of the book.
Need something just for fun, but decently written? Then this is.for you....Read more
The writing is good enough that doesn't matter. The pace is cracking and the dialogue is entertaining....Read more
Well written with awesome characters that I'm looking forward to watching them grow through the rest of the series....Read more
...Some mishaps with grammar and an odd sentence or two but can't win them all. Really, nicely written and I already picked up the second one.Read more
Badly edited, but a few good ideas and interesting characters
3 out of 5 stars
Badly edited, but a few good ideas and interesting characters
The stories start out exciting with a few interesting ideas but the editing is terrible, the writing uninspired, and the plotting gets worse as the series goes on. The last two books aren’t worth reading as by then it’s just an arbitrary series of deus ex machinas - force fields, communication lines, locks, and police arbitrarily fail or succeed without regard to logic or common sense but merely what the author needs to happen at that moment with plot holes you could pilot a spaceship through. In this world a skinny unarmed woman can trivially beat up multiple armed and trained officers (including male ones wearing body armor) simply because she “fights dirty” and a high-level mafioso “identifies as non-binary”. Any police officer or guard or soldier is probably a woman. Skin color is usually “brown skin”. (Not even an interesting or varied *shade* of it - cocoa or chocolate, light or dark - just “brown”.) As for editing, there must have been a spellcheck pass - all the wrong words are real words - but not a grammar check or careful proofread. Every book has extra words, missing words, incorrect words. Jez calls her bf “genus” instead of “genius”. A guy named “Grigory” is “Gregory” in one sentence but goes back to “Grigory” in the next. And so on. (I’ve screenshotted a few examples of this from later books in the series) The dialogue is repetitive - like the amazing number of times you get this exchange when someone is hurt: “Are you alright?” “I’m fine”. There are other ways to say these things! The series isn’t terrible, but it’s…not great.
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Top reviews from the United States

  • 5 out of 5 stars
    Love a Good Sci-Fi Heist Story
    Reviewed in the United States on June 20, 2024
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    This is a Sci-Fi heist story and I am fond of those, so it was right up my alley. Masha is pulling the strings and gets three different convicts released from prison, and then one more, Jez, escapes on her own but is soon persuaded to join the group. The reason - she’s a pilot with no ship, no money and people are after her that want to hurt and/or kill her, so she has nothing to lose. Once the job is explained to the group, they realize it might be a suicide mission, but Jez is fine with that as long as she has a ship she can fly. Ysbel has lost her family, so all she wants to do is wreak havoc with her explosives, Lev has made a deal with Masha to save his family from prison, and Tae wants to save his fellow street kids from life on the street, so all of them have incentive to go along with the plan, once they figure out what the plan is going to be. They all have their strengths and some of their past actions have impacted the other members of the group, which is revealed as we go along - so there are lots of secrets and misunderstandings as well. There is plenty of action, especially during the actual mission, and by the end, the mismatched group has meshed into a great team. The characters were all very different, but interesting, and Masha is a really mysterious mastermind. First she says she’s working for the government, then the mafia, but we don’t really know who she’s working for, if anyone, and I’m sure we’ll learn more about her and her motives in future stories. I really enjoyed the book and I’m looking forward to reading about their next mission, which they decided on at the end of this one.

    One person found this helpful
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  • 4 out of 5 stars
    Space Opera at it's Space Opera-est!
    Reviewed in the United States on May 11, 2025
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    Characters with depth, fast-paced action, lotsa fun tech, and multiple books in the series? C'mon! What more da' ya' want?!

    One person found this helpful
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  • 5 out of 5 stars
    This Book was Shiny
    Reviewed in the United States on August 23, 2025
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    I bought Zero Day Threat after reading Becky Chambers’ The Wayfarer series, because I’m on an LGBTQIA+/queer/female author kick, and - also - the book was advertised as “Firefly meets Ocean’s 11” - a boast I felt was ridiculously overconfident at the time I clicked buy.

    My, how wrong I was proven. The characters are not one-to-one comparisons of course, but the feeling is definitely there. It’s clear from page one that this was a labor of love by RM, and they craft each character beautifully. These are real people; they have flaws, regrets, pain, love, joy….More depth than you might expect from a space western.

    If you like sci-fi, wacky fun, or just aim to misbehave - definitely check out Zero Day Threat.

    One person found this helpful
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  • 5 out of 5 stars
    Great read. Interesting characters. Fast paced
    Reviewed in the United States on January 23, 2021
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    The characters are well developed. Interesting premise and lots of action. You should read this book. I couldn’t put it down. I’ve already downloaded the next book. Thanks to the author

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  • 4 out of 5 stars
    Not your typical misfit crew
    Reviewed in the United States on March 31, 2025
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    This unique group of characters assembled to form a crew all have secrets, most with a darkness tied to them. But this sci-fi adventure is fun.

    One person found this helpful
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  • 5 out of 5 stars
    Pretty awesome
    Reviewed in the United States on November 21, 2022
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    I thought this was a quirky little book, the characters dynamic nicely explored, loved the action and the story. In the beginning, some characters rubbed me the wrong way, leaning too heavily on their archetype. The amount of times the 'street kid' called himself a street kid annoyed me in the beginning, but he quickly grew out of it and I liked him after that. Some mishaps with grammar and an odd sentence or two but can't win them all.

    Really, nicely written and I already picked up the second one.

    3 people found this helpful
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  • 3 out of 5 stars
    Zero Day
    Reviewed in the United States on July 22, 2023
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    Hard to get into. About 1/2 way the story takes off. Looking forward to the next chapter of this UNGOVERNABLE team.

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  • 5 out of 5 stars
    Excellent start of a series!
    Reviewed in the United States on July 10, 2024
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    The author has done a great job of creating a world populated with interesting, complex characters. While the plot is well developed and engaging, it is the depth of characterization that elevates this novel from "very good" to "excellent"!

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Top reviews from other countries

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  • 5 out of 5 stars
    Seriously fun heist story
    Reviewed in the United Kingdom on July 30, 2022
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    Four disperate and desperate souls, faced with their own secrets and demons, agree to carry out an impossible task for a shady government operator.

    The sci fi heist, done well, is a blast to read and Olson's pageturner zips along at a joyful pace with revelations galore. The characters bounce, whinge, moan and grow into the family none of them thought they wanted.

    Reading like a mash up of Mission Impossible, Aurora Rising and Six of Crows, this first book in a series of adventures is a winner and would make a great tv series.

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  • 5 out of 5 stars
    L'agence tout risque, version space opéra
    Reviewed in France on January 25, 2021
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    Un livre que j'ai adoré. D'ailleurs je viens d'acheter la suite.

    Les + :

    - les personnages très fouillés, qu'on a envie d'aimer et qui fonctionnent super bien ensemble. C'est drôle de voir l'équipe s'assembler et affronter sa première mission

    - l'intrigue qui est prenante

    C'est du space opéra classique, direct et ca fait du bien !

    Les -

    - la technologie pourrait être plus fouillé et ceux qui ont besoin des caractéristiques de l'hyperdrive pour accrocher pourront rester sur leur faim. Ca n'est pas de la hard SF.

    En conclusion ? ras le bol de ces livres anxiogènes sur la fin du monde ? Et bien changez ! Zero day threat est une réponse :-)

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  • 5 out of 5 stars
    Action pack and well written!
    Reviewed in Canada on February 6, 2021
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    It's like dirty dozen, oceans right and firefly. It so awesome. Keep up the good work! The new old shop will be the other character in this fantastic story. Thank you for this book! I can't wait for the next one...

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  • 4 out of 5 stars
    Fun characters, quick to read, rip-roaring space opera with a heart
    Reviewed in the United Kingdom on November 15, 2021
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    The characters and arc plot of this series are very enjoyable. The main characters have well-developed voices and grew on me easily, and Olson's prose is good enough to be invisible. Some delicious moments and an enjoyable, mostly light-hearted series with a diverse cast and quick pacing in an interesting setting that I'd love to know more about. Occasionally let down by its editor (more frequent in later books), but hits more than it misses. Would particularly appeal to YA readers. Wish I'd been able to read it twenty years ago.

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  • 5 out of 5 stars
    A book you can't put down.
    Reviewed in the United Kingdom on May 25, 2025
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    This is the first book I have read from RM Olson , and what a book.

    Great storyline, great characters and back story.

    Non stop action from start to finish.

    I am really looking forward to reading the next book in the.

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