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Forgotten Galaxy #4

Galaxy Undone

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SERIES FINALE!

Captured and sentenced to spend the rest of his life mining asteroids, Caleb’s odds of stopping the Legion and finding his way home appear slim. After being transferred to the most dangerous and deadly assignment in the Belt, there’s a good chance his punishment may be completed sooner than he imagined.

But with the fate of the galaxy at stake, he isn’t about to let a little thing like incarceration keep him from his goals. Where one fight ends, another begins…

…and Caleb will never, ever back down until the mission is complete.

363 pages, Kindle Edition

Published December 15, 2023

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About the author

M.R. Forbes

190 books1,042 followers
M.R. Forbes is the author of a growing number of science-fiction series including Rebellion, War Eternal, Chaos of the Covenant, Stars End, and the Forgotten novels. Having spent his childhood trying to read every sci-fi novel he could find (and write his own too), play every sci-fi video game he could get his hands on, and see every sci-fi movie that made it into the theater, he has a true love of the genre across every medium. He works hard to bring that same energy to his own stories, with a continuing goal to entertain, delight, fascinate, and surprise.

He maintains a true appreciation for his readers and is always happy to hear from them.

To learn more about M.R. Forbes or just say hello:

Visit his website:
mrforbes.com

Send him an e-mail:
michael@mrforbes.com

Check out his Facebook page:
facebook.com/mrforbes.author

Join his Facebook fan group:
facebook.com/groups/mrforbes

Follow him on Instagram:
instagram.com/mrforbes_author

Find him on Goodreads:
goodreads.com/mrforbes

Follow him on Bookbub:
bookbub.com/authors/m-r-forbes

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Community Reviews

5 stars
630 (65%)
4 stars
262 (27%)
3 stars
66 (6%)
2 stars
4 (<1%)
1 star
3 (<1%)
Displaying 1 - 20 of 20 reviews
Profile Image for Calvin.
282 reviews7 followers
January 3, 2024
Good but almost too much going on

Let me start by saying the Forgotten series is probably my favorite series of all time. Sheriff Duke is a legendary hero. I even really enjoyed Caleb's introductory series. But this one I kind of struggled to get into. Overall it's good but this book in particular just quite hit that high. There were a ton of editing mistakes that were easily correctable. One character has his name changed from Mathis to Mathias, and then back again. There's a ton of action in the book. Caleb keeps getting drawn into one fight after another after another. Eventually it gets to be a bit much, like there needs to be a break. Each situation plays out exactly the same. Caleb goes in with a plan, gets surprised, comes up with a new plan, almost fails, and then just forces his way through to victory. There's also a massive amount of secondary characters that get brought up from previous novels that I had completely forgotten about since they hadn't been mentioned in so long, but this book brings them back like they were just mentioned a few pages before. Characters seemingly disappear for periods of time in a fight until they suddenly pop back up. In the final mission, there's no mention of Orin until the halfway point, but apparently he had been there the entire time. I really wanted to like this book, but it just didn't grab me like others. I'm really looking forward to what new adventures Caleb finds himself in. Hopefully Washington finally comes back, or he meets up with the sheriff again to take on Iagorth
Profile Image for Space Cowgirl.
4,133 reviews147 followers
December 22, 2023
Military, Mercenary🐺💪🔫🗡 Sci-fi🚀💫💥
Yay! finally a book That isn't part of an endless series📚!
This fourth book is definitely the end of this series📚 and ends happily. The author may decide to use the same character in a new series, but this one has ended.
A symbiot🐛 enables our hero, Caleb🐺💪🔫🗡, to perform super human feats at times, and it is also an all knowing intellect.

I got this ebook from Amazon📚 with Kindle Unlimited.

I recommend all of M R Forbes books📚 for lovers of military sci-fi space opera🚀💫💥
Profile Image for Paul.
452 reviews
March 16, 2024
Nicely Done

The Forgotten Galaxy series is a well crafted and entertaining collection. M.R. Forbes has created an enjoyable four book collection. Likable characters, plenty of action, humor and drama. I wish the main couple had developed their relationship a bit more, overall a fine read.
1 review
September 26, 2025
Exciting

I have been an avid fan of this book series since the first installment featuring The Sheriff. The author's consistent storytelling and engaging narrative continue to captivate me. I look forward to reading more works from this talented writer and hope they maintain the same high-quality writing that has kept me thoroughly entertained throughout the series.
Profile Image for Alan Wilkerson.
64 reviews2 followers
February 29, 2024
Excellent series!

Different scifi premise, excellent cast of characters, great bad guys, non-stop action. And a great ending! Oops, gotta read the series to find out the great ending!
Profile Image for Suzanne .
49 reviews
June 11, 2024
Was extremely disappointed with this Forgotten Galaxy series. It was long winded and laborious.
I did however, love the running commentary of Sheriff Hayden Duke and the Thanks Giving MRE packets. The rest of the series of books were extremely well written.
1 review
July 23, 2024
Have read the entire forgotten series - can’t wait to see if they all can fit together. Axon forge is now by earth- Caleb’s returned with the moiety- and the spiral is an ally - hummm new series idea
Profile Image for Jesse Mathewson.
49 reviews12 followers
March 4, 2025
Mil/scifi/futuristic

Love this book series and the others he has written. They combine human experience with a solid interpretation of potential alien life. Very well put together.

Clear protagonist, very well done mystery and fulfillment. I enjoyed every minute of reading.
Profile Image for Kenn Goslin.
836 reviews7 followers
April 10, 2025
When a villain is in your mind, how do you beat it?

The Forgotten Galaxy is in the midst of a galactic battle of the minds for control. Caleb Card is one of the most determined warriors anyone has ever encountered!
7 reviews
December 21, 2023
fun read

Great series, I like the way it moved along. Good character development and the story is 4 books so not too long. Another character as interesting as Sheriff Duke.
10 reviews1 follower
January 24, 2024
Loved it!

An exciting twist for one of my favorite characters in the “Forgotten” franchise. I hope to read more about Caleb Card in the future!
Profile Image for Frank McGee.
6 reviews
February 1, 2024
Thrilling and always exciting.

A great read, enjoyable throughout.
Needs a slight bit of romance. Especially Calab Card.
I've enjoyed every book and hope there's more to come.
88 reviews
March 15, 2024
Like all the other novels from this other better editing is needed. But still great characters and I love this world forbes created! Caleb might just be my favorite.
1 review
March 16, 2024
Great read, exciting ride.

This was an exciting book to read & had all the things i look for in an action scfi book.
10 reviews
May 5, 2024
Wonderful space opera novel!

Well laid out, interesting characters, exciting action! For utter sci-fi action, this one is hard to top!

Well done Mr Forbes!!!
10 reviews
Read
May 8, 2024
Great

This series was a great one, I hope enjoy it as much as I did. Believe me, this guy is gold.
13 reviews1 follower
December 10, 2025
Did a great job with the characters and wrapping up the four book series.
Profile Image for Chris.
32 reviews
January 7, 2024
Very much a plot driven story with neverending action. Try not to look at character motivation or any complexity in the political or economic aspects in the novel. Ratings for this last book have survivorship bias in that anyone who did not like this style would have stopped at book 2.
Profile Image for Jen.
2,214 reviews154 followers
July 15, 2025
I'd call this a good ending but not a great wrapup. It had a lot of action with periods of calm that tended to slow down the action, which would be fine except that it felt kind of disconnected. The ending felt like they were catching their breath rather than all done.

Still, great story and go Caleb! Way to conquer the bad guys! And Paul Heitsch was excellent on audio.
Displaying 1 - 20 of 20 reviews