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Powerful players scheming from the shadows. An ancient alien starship. Who can be trusted with the most coveted technology in the Commonwealth?

Evan and Anya flee Aethos with a target on their backs. Unfortunately, the ship’s sentient AI is missing thousands of years of history and is just as surprised to be on the run.

As they search for the ship’s makers, Evan and Anya soon discover that the interstellar plot to transform the Commonwealth with alien tech runs much deeper than they’d ever imagined.

With two factions squaring off on Aethos, they must pick a side. In the face of powerful adversaries, Evan and Anya will need to use all their skills and contacts to decide who they can trust with the ancient ship’s powerful technology.

Can they keep the ship from falling into the wrong hands?

Lost Planet is the riveting second installment in the Starship of the Ancients series. If you like suspenseful space adventures filled with sci-fi action, vivid alien worlds, and interstellar intrigue, then you'll love this thrilling space opera by author A.K. DuBoff, creator of the Cadicle Universe.

Grab your copy now to continue the adventure!

409 pages, Kindle Edition

Published June 27, 2025

959 people are currently reading
66 people want to read

About the author

A.K. DuBoff

79 books114 followers
A.K. (Amy) DuBoff has always loved science fiction in all its forms, including books, movies, shows, and games. If it involves outer space, even better!

She is an award-winning and USA Today bestselling indie author specializing in space-based science fiction and fantasy. Dubbed the modern “Queen of Space Opera” by her readers, she is most known for her acclaimed Cadicle Universe. Amy’s short fiction has been published by NewCon Press, Seventh Seal Press, and in numerous indie publications.

When she's not writing, she enjoys travel, wine tasting, binge-watching TV series, and playing epic strategy board games.

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5 stars
712 (52%)
4 stars
492 (36%)
3 stars
129 (9%)
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Displaying 1 - 30 of 34 reviews
Profile Image for Bill Pentland.
204 reviews7 followers
November 22, 2025
This was the 2nd book of a 4 book series, Starship of the Ancients. I enjoyed it for the most part. There are times when Duboff lapses into a YA mode, which is alright by itself, but I don't think it blends well when he moves up to a more classic space opera narrative.
The story has gotten more interesting as the main characters, Evan and Arya, have fleshed out a bit. We also have the conjunction of forces against 2 enemies. The fact that one of those enemies is their own government makes it more interesting. The alien technology, in the form of their ship and its AI director, Sam, have become a more integral part to the story. Right now, the things the alien technology can do seem more like magic than science.
The 3rd book is set to be released in December but so far only in Kindle form. That's ok but not to this bibliophile. I will wait. I have a good stack of TBR waiting for me.
Profile Image for Steve Buck.
19 reviews1 follower
June 28, 2025
How many people could control themselves if they had virtually unlimited power at their command? Lost Planet, Book 2 of the Starship of the Ancients series, shows how 2 different types of individuals handle that opportunity. Evan Taylor, because of his previous undercover work with the Noche Syndicate, was unknowingly given the key to master alien technology. Roman Santano, a family member of that syndicate, quite accidentally became infused with some of that power, and they are diametrically opposed in their goals in using that power.
Evan and Anya Rojas were last seen being hijacked by an alien ship run by Sam, an AI, but with its help and amazing abilities, seek to find out what happened to the alien race that created it, and try to answer the perplexing questions of who they can trust and commit their allegiance to- former chancellor Thomas Conroy or current chancellor Victor Rostov- or neither one. Eventually they form an uneasy alliance with Zairis Alva, one of the Syndicate’s contractors. Will the manpower and weaponry she brings to the table be enough to penetrate the Syndicate’s control over the clandestine operation which may hold the key to the dispersal and application of the alien tech, which could have grave consequences for the Commonwealth?
Find out in this exciting sequel to Stranded by A. K. DuBoff, as the adventure and mystery continue and deepen. I am very much hooked on this series.
Profile Image for Regina.
1,097 reviews
June 27, 2025
The adventure continues and new challenges abound!

Now that an ancient alien starship has whisked them away, Evan and Anya are facing plenty new challenges as they are searching for allies and trying to untangle the secret plot(s) they find themselves caught up in.

I found this second installment just as engrossing and entertaining as the first. A.K. DuBoff has truly created an intriguing world I thoroughly enjoy getting lost in (as a reader, at least - I imagine Evan and Anya feel differently about their ordeal…).
Profile Image for Rosemary.
3,871 reviews71 followers
June 28, 2025
Lost Planet - a review by Rosemary Kenny 

AK DuBoff's second book in her great Starship of the Ancients series, Lost Planet sees Evan and Anya aboard Asamar, an alien AI-starship, after surviving a sabotaged colonisation mission to Aethos.

Lost Planet is an all-action space adventure, with a dynamic storyline full of secrets, lies and a spellbinding cliff-hanger ending... don't miss it!
Profile Image for Paul Madsen.
507 reviews4 followers
July 2, 2025
Powerful dynamics on a universe begging for more

The saga continues with double dealing on a grand. Worthy of PG rating clean without the usual bedroom scenes. I look forward to the next chapter.
2,466 reviews18 followers
June 29, 2025
The Plot Thickens.
Picking up from where book one ended, we are thrust into a fast paced world of intrigue, survival, AI and all things alien. I was drawn into the suspense surrounding the elusive alien technology as Evan and Anya try to figure things out. As always, politics and the quest for control provide a very morally grey area in the story. I really enjoyed descriptions of the settings, action and even the very realistic conversations where characters struggle with trusting each other. I think the whole concept surrounding this missing alien race is fascinating as it is presented. I am looking forward to where the next novel will lead the characters.
Profile Image for Ralph.
255 reviews1 follower
July 4, 2025
I just finished "Lost Planet" the second book in A.K. DuBoff's "Starship of the Ancients" series. It was every bit as good as the first book. Evan and Anya continue their quest to right the wrongs committed by a corrupt government and a criminal syndicate that plan to use alien technology to rule the galaxy. Evan and Anya have teamed up with some alien technology of their own, in the form of a sentient alien starship that was part of an advanced race that seems to have disappeared.

This is a classic good guys versus bad guys story, complete with honorable heros and less than honorable villians (but the characters are much more complicated than that). The story began on a single mysterious planet and has expanded throughout the galaxy as the humans attempt to discover the fate of the aliens and to understand the secrets that they left behind.

A.K. DuBoff excells at world-building, which is evident in the universe that she has created for this adventure. She is aslo, adept at developing each character so the reader gets to know each player in this saga, understanding thier motivations and goals, and their strengths and weaknesses. Even the AI/Spaceship has a personality,as well as its own motivations and goals. The story is well crafted and is exciting to read. Every page advances the adventure and entices the reader to read the next. My only misgiving is that I will have to wait for book #3 but, I understand that a quality product takes time.

These books should be read in order so, start with "Stranded", then read "Lost Planet", and then wait, along with me, with anticipation, for the release of "Rebel Worlds".
Profile Image for Eric.
100 reviews
Read
July 1, 2025
Book 2 of the Starship of the Ancients series. Where the characters are introduced in the first book, Lost Planet stands on its own and expands the universe. I like that the two protagonists are not some exiled royalty or semi-retired super soldier. While one was a soldier, they're in hiding, exiled and trying to start a new life when disaster stikes. Teaming up with another survivor they overcome the odds (book 1). Now with their own ship and an AI that acts in many ways like modern computers (if you don't ask the right question it doesn't tell you what you want), Evan and Anya go in search for what's happened to the ancient civilization. Every answer seems to bring two more questions and at some point Evan and Anya must choose a side in the galactic conflict. The past of both is center to their current predicament and I'm looking forward to the 3rd as I await (hopefully) answers to why they've both become the focus of a galactic struggle.
Definitely worth the read!
1 review1 follower
November 29, 2025
Awesome

This series is absolutely amazing and incredibly exciting, providing a level of entertainment that is truly unparalleled. It delves deep into the complexities of humanity, prompting me to reflect on our journey and remarkable evolution we have undergone over the centuries. The narrative is so immersive that it ignites a profound sense of adventure within me, compelling me to imagine the possibility of discovering the advanced technology presented in this book. It stirs a hopeful curiosity, making me wonder if such groundbreaking technology might actually exist somewhere out there in the vast expanse of the cosmos. I am thoroughly captivated and would highly recommend this series to anyone seeking an exhilarating and thought-provoking experience. Five Stars.
Profile Image for Dannan Tavona.
975 reviews10 followers
September 13, 2025
Waffling leaders

Alternate universe, SF advanced technology, aliens, save humanity

The leader of what the English call "the loyal opposition" was by turns decisive and waffling; he kept trying to broker deals with opponents that not only tried to kill him and others, even when the hit team sent to eliminate him and his allies, and did a fair job of severely reducing their numbers. Seems the good guys have a serious shortage of possible allies. And, they're linked to both a major corporation and the most brutal and dangerous crime syndicate.
Excellent editing. All right, I'm in two books. One book to wrap things up.
510 reviews2 followers
July 13, 2025
Thank you for the continuing story from book one. This book picks right up and continues the narrative and the characters continue their various struggles. Again, this volume is well done with characters continuing to grow and change although in one character's case the change in mostly for the worse, but interesting things happen in his case also. This series has excellent universe making, interesting characters, foul villains and lots of action. Read the first book in the series then this one. Highly recommended.
Profile Image for Tina.
725 reviews6 followers
July 10, 2025
Lost Planet

A compelling narrative that follows the protagonists Evan and Anya, complemented by a meticulously developed supporting cast. The sophisticated world-building provides an engaging reading experience that progressively captures the reader's attention. This series represents an essential literary work for discerning readers seeking a nuanced exploration beyond conventional genre boundaries.
Profile Image for David.
396 reviews
August 10, 2025
The conspiracy gets even crazier, and I'm loving it. So now we're engaging a crime syndicate to fight a regime which took over by coup from a supposedly dead chancellor, all of whom are trying to glean power from alien technology from a now-missing civilization.

Character development continues to be good. World-building makes sense.

Recommended for lovers of sci-fi thrillers and conspiracies.
388 reviews4 followers
August 17, 2025
Excellent

It kept me reading... Not scanning... And that's a bigger complement than you realize. I've read over 500 sci-fi books and most of them bore me enough that I find myself scanning to get to the end. Someone once said that a good book is one that you can't wait for it to end, and then when it does you don't want it to. I didn't want this one to end, so that means I'll be buying the next one. 🙂
332 reviews
July 29, 2025
Surprises abound.

But our heroes are steadfast and honorable. The technology that Evan has harnessed from an alien culture has saved his and Anya's lives. It looks as though they are making headway putting Conroy back into control. But we all have to wait for the next installment to see how things shake out.
Profile Image for Anniebodiehome.
23 reviews
October 13, 2025
A great continuation of Stranded! This book really pushes the readers deeper into the galaxy of Evan and Anya. You find out more about the different groups as well as some backstory to key players. I really enjoy the story building around the aliens and can't wait to see more from A.K. DuBoff. I would highly recommend this series if you are looking for a spacefaring, sci-fi adventure.
508 reviews2 followers
June 29, 2025
great series

I'm amazed that this author can write so many fantastic novels, I hope that he never stops writing. His books are some of the best Entertainment  I have read and worth the time to read them. Thank you for a very fun entertaining read.
200 reviews1 follower
July 13, 2025
Great Read

When real life and science fiction meet, there's bound to be fantastic action. This story brings a lot to the person who enjoys being surprised by new and astounding ideas. Ideas that we often consider in our own fantasies.
22 reviews
July 23, 2025
A captivating read!

Lost Planet is the beginning of a sci-fi space opera which was captivating from the beginning. The author has a talent for character development which makes the story easy to follow. Highly recommended.
103 reviews
August 16, 2025
Finished this one in two days!

Another great story that kept me wanting to keep reading. Alien technology has essays intrigued me and I love AI. that add to the plot. Sam was one of the best!
93 reviews
September 15, 2025
Alien Technology

As the story move along, it was interesting to read all the various avenues for using said technology. The cast of characters continues to adapt to the situation they find themselves in, both the good and the bad.
Thank you for another great read.
Profile Image for Scott B Stillman.
138 reviews
October 18, 2025
Enjoyable and clever read

I continue to enjoy this series. The plot is creative and the main characters are intelligent and very human, with positive traits and flaws. (Even Sam seems to be getting very human)
I look forward to continuing the series…
Profile Image for M.J. Blehart.
Author 29 books11 followers
Read
October 30, 2025
A fun second story

As the series and characters developed, the overall story keeps me interested. But the character perspective shifts are sometimes a bit jarring and distract from the overall work.
Profile Image for Willow Webster.
480 reviews21 followers
June 27, 2025
This is book number 2 . I read book 1 and enjoyed it. It was well written and this one was just as good. 5 stars!
76 reviews1 follower
July 15, 2025
Not bad, but firmly by the numbers. The plot is prosecuted promptly and keeps moving, but at the expense of the literary exploration undertaken by other authors.
18 reviews
August 27, 2025
Great series!

This author captures your soul! The characters are well developed and used in an exciting story. It truly a book(s) you can not put down.
173 reviews1 follower
October 4, 2025
extremely well written

This author has a knack for writing to make you feel like you’re actually there. It’s amazing! The plot continues!
38 reviews
November 9, 2025
Opinions

This was a fun read. It has. a large number of complicated characters some admirable and many not so good to purely evil.

Profile Image for Jennie Mitchell.
12 reviews2 followers
December 18, 2025
Good plot and great characters

I'm enjoying the plot and the characters. The author keeps you guessing. I'm hoping that a new character will rise from the colonists.
Displaying 1 - 30 of 34 reviews

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