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Marko Kloos
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Centers of Gravity (Frontlines Book 8) Kindle Edition

by Marko Kloos (Author) Format: Kindle Edition
4.7 4.7 out of 5 stars 9,014 ratings
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Stranded light-years from home, Major Andrew Grayson and his crew are on a desperate mission to discover the Lankies’ secrets. They can’t let what they’ve found die with them.

Nine hundred light-years from home, Major Andrew Grayson and the crew of NACS Washington are marooned in a sunless system with limited water, reactor fuel, and food. The last hope for survival is to go where nothing human has gone before.

After embarking on a scouting mission to the only moon with surface signs of life, Andrew and his special tactics team make two startling discoveries. One is a dream: a form of protein and plant life that could save the starving humans in the rogue system. The second is a nightmare: this harvested rock is infested with Lankies. Far from the seemingly mindless aggressors Andrew has battled for years, these show a terrifying awareness, and they have surprising secrets of their own hidden away in the darkness.

When the Lankies sense an uninvited presence in their world, Andrew’s operation becomes an expedition to hell. The odds against his small crew are stacked high. Of all the mysteries of space, how to escape with their lives is the greatest unknown of all.

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  1. Book 8 of 8
    Frontlines
  2. Print length
    329 pages
  3. Language
    English
  4. Publisher
    47North
  5. Publication date
    August 30, 2022
  6. File size
    5.6 MB
  7. Page Flip
    Enabled
  8. Word Wise
    Enabled
  9. Enhanced typesetting
    Enabled
  10. See all details
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Frontlines Book 1 - Book 8
Bundle price: Kindle price
$13.97
Bundle price: Kindle price
$23.95
Bundle price: Kindle price
$41.92
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Editorial Reviews

Review

“…flawlessly performed by the narrative talents of Eric G. Dove who brings this science fiction adventure come to life in a true 'theatre of the mind' experience. …strongly recommended.” ―Midwest Book Review

About the Author

Marko Kloos is the author of two military science fiction series: The Palladium Wars, which includes Aftershocks and Ballistic, and the Frontlines series, which includes Orders of Battle and, most recently, Centers of Gravity. Born in Germany and raised in and around the city of Münster, Marko was previously a soldier, bookseller, freight dockworker, and corporate IT administrator before deciding that he wasn’t cut out for anything except making stuff up for fun and profit. A member of George R. R. Martin’s Wild Cards consortium, Marko writes primarily science fiction and fantasy—his first genre loves ever since his youth, when he spent his allowance on German SF pulp serials. He likes bookstores, kind people, October in New England, fountain pens, and wristwatches. Marko resides at Castle Frostbite in New Hampshire with his wife, two children, and roving pack of voracious dachshunds. For more information, visit www.markokloos.com.

Product details

  • ASIN ‏ : ‎ B099RVRQJ1
  • Publisher ‏ : ‎ 47North (August 30, 2022)
  • Publication date ‏ : ‎ August 30, 2022
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 5.6 MB
  • Text-to-Speech ‏ : ‎ Enabled
  • Screen Reader ‏ : ‎ Supported
  • Enhanced typesetting ‏ : ‎ Enabled
  • X-Ray ‏ : ‎ Enabled
  • Word Wise ‏ : ‎ Enabled
  • Print length ‏ : ‎ 329 pages
  • Customer Reviews:
    4.7 4.7 out of 5 stars 9,014 ratings

About the author

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Marko Kloos

Marko Kloos

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Marko Kloos was born in Germany and raised in and around the city of Münster.

Marko writes primarily science fiction and fantasy, his first genre love ever since his youth when he spent his allowance on pulp serials. He's the author of the bestselling Frontlines and Palladium Wars series of military science fiction.

Marko lives in New Hampshire with his wife, two children, and their roving pack of dachshunds.

Customer reviews

4.7 out of 5 stars
9,014 global ratings

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Customers say

Customers enjoy the book series and find it a fun read with an excellent storyline. They appreciate the believable characters and their depth throughout the series. The writing quality is praised as excellent and well-written. Readers praise the realistic action that captures the essence of real combat. The emotional content is described as touching and thought-provoking.

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ReadabilityStory qualityCharacter developmentWriting qualityActionEmotional contentThought provokingPace
233 customers mention "Readability"230 positive3 negative

Customers enjoy the book. They find it believable and engaging with well-developed characters. Readers appreciate the flow of the story and the quality of the print on demand edition. Overall, they describe it as an enjoyable read and a great way to pass time.

"...Marko Kloos has really have created a magnificent science fiction saga with three-dimensional characters and gut-wrenching action...." Read more

"This is the final book in the series and it ends well. The story has a good mix of intrigue and action...." Read more

"Wow, this is an excellent series. I read this series set just as fast as the "Honor Harrington" series by another author...." Read more

"...But, even coming from this highly empathetic person, they are so worth reading. I definitely recommend." Read more

156 customers mention "Story quality"140 positive16 negative

Customers enjoy the engaging storyline with likable characters. They find the book has an interesting plot twist and satisfying ending. Readers describe the book as action-packed and fast-paced, with no filler.

"...That never happened over 8 books! This series finale (?) has terrific suspense (who lives or dies) and features a small skirmish or two and then a..." Read more

"Great story masterfully told. Not hard SF as I would normally classify that genre but close enough. Military SF without a doubt." Read more

"This is the final book in the series and it ends well. The story has a good mix of intrigue and action...." Read more

"...I highly recommend this read. It's a perfect blend of battles and the life of a soldier staying true to his core self." Read more

57 customers mention "Character development"57 positive0 negative

Customers enjoy the believable characters that grow in depth and breadth throughout the series. They find the science fiction story human, with no exaggerated heroic moments. The book weaves a deeply human story of commitment and sacrifice.

"...really have created a magnificent science fiction saga with three-dimensional characters and gut-wrenching action...." Read more

"Man did I love this whole series. Great story, great characters. As a veteran of the USAF, I can relate to so many of these folks." Read more

"...I enjoyed the way the characters were developed over the span of the books." Read more

"...Characters that you care about. Stories that you must know how it ends. I’ve never read books faster than this. Can’t put them down...." Read more

44 customers mention "Writing quality"44 positive0 negative

Customers enjoy the writing quality of the book. They find it well-written, with a compelling story told from the first-person perspective. The author is described as prolific and has many other works to choose from. Readers appreciate the great word-building and how the author captures aspects of military sci-fi. Overall, they describe the book as an easy and enjoyable read that takes them on an exciting adventure.

"...audiobooks, Luke Daniels IS Andrew Grayson, and one of the best narrators out there, rivaling Ray Porter...." Read more

"I highly recommend this series. Exceptional story; very well written. Marc Klous is a great writer, and I’ll look for other works by him." Read more

"Excellent story and style, told from the first person, with extensive detail of a fascinating future!..." Read more

"...There were slow spots at times (hard to avoid) and since it is written in first-person, you can bet that the hero survives even if some of the other..." Read more

34 customers mention "Action"34 positive0 negative

Customers find the book engaging with its realistic portrayal of combat. They appreciate the author's skill in developing relatable characters and weaving them into the story. The breadth of human experience is conveyed in a natural, believable manner. The descriptions of the environment are compelling, and the ins and outs of battle keep readers hooked.

"...The story has a good mix of intrigue and action. I would rate the series as a whole with 4 stars but each individual book is probably 3 to 3.5...." Read more

"...the story, winding suspense, mystery, and humanity around an incredibly realistic and engrossing military experience...." Read more

"...Kloos does a fantastic job of keeping action and suspense up while still focusing on the people more than hardware or tactics...." Read more

"...story and style, told from the first person, with extensive detail of a fascinating future!..." Read more

33 customers mention "Emotional content"28 positive5 negative

Customers find the book emotional and poignant. They describe the stories as gripping, with believable characters and relatable relationships. The author captures the interpersonal relationships well, making the story seem first-hand. The love story is integrated into the series, and the action is intense.

"...science fiction saga with three-dimensional characters and gut-wrenching action...." Read more

"It was a great, tense, heroic ride, but did you have to make me cry at the ending? So glad you did, thank you." Read more

"...Marko captures a lot of the interpersonal relationships that makes it seem like he has first hand knowledge. Are we going to get some sequels?" Read more

"...If you like sci FYI, and family stories, I give this 5 stars. Enjoy." Read more

13 customers mention "Thought provoking"13 positive0 negative

Customers find the book thought-provoking and enjoyable. They appreciate the realistic and meaningful development of the characters and worlds. The story keeps readers hooked with its action and satisfying conclusion. Readers praise the author's imaginative storytelling style and consider it a fantastic continuation to the series.

"...developments and protagonists’ emotions develop realistically and meaningfully...." Read more

"Action packed, Very imaginative, original and personal . Unbelievable detail . I enjoyed all 10 books. The kind of leader you respect." Read more

"...the end of the Frontline series it was an entertaining and soul-satisfying journey. Here's hoping for a "real" New England winter in '22/'23." Read more

"Book 7 and this conclusion are great additions to the series. Just great fun and well written...." Read more

18 customers mention "Pace"11 positive7 negative

Customers have different views on the book's pace. Some find it picks up quickly and is a quick read with non-stop action. Others feel it's slow in some spots, not interesting in certain parts, and the last two books are starting to lag in quality.

"...The writing is excellent. Pace is good, every time things start to seem slow or similar to previous chapters or books a good twist or development..." Read more

"This series started off slow (to me). The first book felt like a very long set up for a story to come (which it was)...." Read more

"...I loved the witty one-liners and the fast action...." Read more

"...Each book is unique, logical, fast paced and action packed with no filler. Worth ten stars and every penny I ever spent on Kindle Unlimited." Read more

Top reviews from the United States

  • Christopher
    5.0 out of 5 stars A hugely satisfying ending (?) to the Frontlines saga
    Reviewed in the United States on September 9, 2022
    Verified Purchase
    Writing this review provides a bittersweet moment, as it seems that the Andrew Grayson storyline seems to have wrapped up, and quite satisfactorily, too. While maybe not a popular opinion, I think leaving quite a bit of mystery surrounding the nature and origin of the Lankies is a smart move on Marko Kloos' part. Smart authors don't write themselves into a corner, with either story details or plotlines, leaving them no choice but to introduce some deus ex machina solution to a self-created problem. That never happened over 8 books! This series finale (?) has terrific suspense (who lives or dies) and features a small skirmish or two and then a terrific extended final battle both in orbit and on the ground. And without spoiling anything, lets just say Andrew Grayson's personal battle with the Lankies begins and ends in the same place.
    I somehow lucked into Terms of Enlistment based on a recommendation on some internet forum. From that first book, I was hooked, and each subsequent volume was eagerly awaited. As for the audiobooks, Luke Daniels IS Andrew Grayson, and one of the best narrators out there, rivaling Ray Porter. I would be remiss if I didn't give proper credit to Eric Dove, for stepping into the characters with a similar style to Daniels, so it isn't a jarring difference. Taking over for a long-time narrator cannot be easy and he has handled the books with aplomb.
    I've re-read and re-listened to all of the stories multiple times. Marko Kloos has really have created a magnificent science fiction saga with three-dimensional characters and gut-wrenching action. If this is the end of all things Frontlines, the series went out on a high note.
    7 people found this helpful
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  • jon and erika
    5.0 out of 5 stars Great finale to a great series
    Reviewed in the United States on March 4, 2025
    Verified Purchase
    Great story masterfully told. Not hard SF as I would normally classify that genre but close enough. Military SF without a doubt.
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  • James Weiss
    4.0 out of 5 stars Fitting finale
    Reviewed in the United States on March 8, 2024
    Verified Purchase
    This is the final book in the series and it ends well. The story has a good mix of intrigue and action. I would rate the series as a whole with 4 stars but each individual book is probably 3 to 3.5. The sum of the whole is greater than the parts.
    Helpful
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  • Amazon Customer
    5.0 out of 5 stars Excellent series
    Reviewed in the United States on January 23, 2025
    Verified Purchase
    Wow, this is an excellent series. I read this series set just as fast as the "Honor Harrington" series by another author. I highly recommend this read. It's a perfect blend of battles and the life of a soldier staying true to his core self.
    Helpful
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  • Jodie W
    5.0 out of 5 stars Grieving the loss of these characters
    Reviewed in the United States on March 3, 2025
    Verified Purchase
    This series started off slow (to me). The first book felt like a very long set up for a story to come (which it was). But I don’t keep reading books I’m not into so, even that slow beginning caught my imagination.

    Over the course of 8 books I became deeply attached to the central cast of characters and to the struggle for survival they experienced. These books are not a light read. They touch on many painful and heavy topics and I was unsurprised to read the author’s bio and find he was a soldier. But, even coming from this highly empathetic person, they are so worth reading. I definitely recommend.
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  • Buckey Turk
    5.0 out of 5 stars excellent finale
    Reviewed in the United States on January 20, 2025
    Verified Purchase
    Really loved this series. Some authors do know how to wrap up a saga. They just peter out and their books go downhill. Not so here, excellent storytelling!
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  • Adam
    5.0 out of 5 stars Extremely well written and satisfying
    Reviewed in the United States on January 9, 2025
    Verified Purchase
    I actually started these books in the wrong order, Read the one about the girl and her lanky sniffer dog. I was disappointed that there wasn't another to follow her story then realised there was all these books. What a ride. Maybe there is more coming or some books I missed. I'll certainly keep an eye out.
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  • K. M. Dorsey
    4.0 out of 5 stars Andrew embarks on the riskiest mission of his career
    Reviewed in the United States on September 22, 2024
    Verified Purchase
    He’s been in the Fleet for thirteen years and survived some harrowing experiences. His last assignment put him and his crew in an entirely new class of danger. “Their collective survival probably used up all their combined good fortune for the rest of their lives” seems an apt paraphrase for the stuff they survive. Andrew is finally content to let the war move on without him because he’s embarking on a different adventure.
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Top reviews from other countries

Translate all reviews to English
  • Kindle Customer
    5.0 out of 5 stars Such a satisfying chapter in Andrew Grayson's saga
    Reviewed in Canada on September 1, 2022
    Verified Purchase
    I just finished Centers of Gravity, and am still savoring its aftertaste as I write this. This book's plot is not complex, but it is superbly told and highly engaging. And if this is the end of the Andrew Grayson story arc, I feel more than satisfied.

    The story focuses primarily on Andrew leading his team through two infiltration missions in the lankies' rogue planet system. Along the way, we get space battles, heartbreaking moments, and a chance to learn more about two strong female characters in Andrew's life. We learn more about the lankies' planet and how they make their war machines. We also learn more about the personal burden of leadership that the protagonist carries, and how he has to live with the consequences of his command decisions.

    This book is a great addition (and character finale?) within the Frontlines series. The action is non-stop, the infantry combat is visceral, and the human connections between the characters help keep the stakes high. Author Marko Kloos never falls into the pit of info dumps, and his first-person writing voice moves things along quickly. For my military SF tastes, I found this eighth book to be another satisfying blend of Frontlines action, plot, and protagonist characterization.

    My two complaints about this book are that I had to wait months for its release, and that there is no date yet for the next Frontlines chapter (if there is one)! I do hope there will be another book after this, as I have enjoyed this series immensely.
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  • Sine
    5.0 out of 5 stars Excellent read
    Reviewed in the United Kingdom on February 5, 2025
    Verified Purchase
    The final book of a very enjoyable series. Well paced and with an ending that is right and fitting. Will look forward to reading more from this author.
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  • Helmut Lichtenegger
    5.0 out of 5 stars Happy ending
    Reviewed in Germany on January 15, 2025
    Verified Purchase
    Andrew Grayson überlebt einfach alles um zu seiner Haley glücklich auf die Erde wiederkehren zu können und findet sogar seine neugeborene Tochter vor, ein cheesy end
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  • Claude Chalem
    5.0 out of 5 stars it's a great adventure
    Reviewed in France on August 25, 2023
    Verified Purchase
    I just regret that this book is the last in the series. It was extremely enjoyable.
    Report
  • Lord rascal
    5.0 out of 5 stars Didn't want it to be over
    Reviewed in India on September 7, 2022
    Verified Purchase
    It did get a little emotional for me right at the end. I have loved Marko Kloos's books especially this series and i did not want this book to be over..

    The story was good, the writing most of all. I sensed what was coming and even then i was looking forward to reading it.

    This series is by no means over and i am looking forward to reading the other books when they are released.

    Loved it.
    Report

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