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Leviathan (The Lost Fleet: Beyond the Frontier #5)

4.16  ·  Rating details ·  4,048 Ratings  ·  171 Reviews
“One of the best military science fiction series on the market,” (Monsters and Critics) The Lost Fleet delivers thrilling combat on a grand space opera scale. Now, Admiral John “Black Jack” Geary embarks on a brand new mission—to defend the Alliance from itself—in New York Times bestselling author Jack Campbell’s latest action-packed novel…

Two Syndicate World star systems
Hardcover, 323 pages
Published May 5th 2015 by Ace (first published May 2015)
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Popular Answered Questions
Yutg I don't think so. I am a big fan of the series and I've always look for one but found none.
Tony Better late than never in answering....From what he's said Leviathan is not the last ever but a "pause" in the Black Jack story. The Lost Stars spin…moreBetter late than never in answering....From what he's said Leviathan is not the last ever but a "pause" in the Black Jack story. The Lost Stars spin off is at 4 books (no mention of a 5th yet) and there are 2 books in the prequel series so far(less)

Community Reviews

(showing 1-30)
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 Danielle The Book Huntress (Back to the Books)
This was quite suspenseful, with Black Jack trying to out-think the artificial intelligence of the dark ships. I have really come to enjoy this series and I look forward to the next book.

Reviewed for Bitten by Books.
Eric Allen
May 08, 2015 rated it it was amazing
I have to say, that Jack Campbell really stepped it up for this one. It's probably the best of the series so far. The thing that was really lacking in this series has always been the human side of things. We hear about ships exploding, and numbers, but we never really see any people. This book too a few steps toward remedying that. There's some actual character development here, and real characters other than Geary, which hasn't really happened in the 10 books that came before this one. The acti ...more
M Hamed
Jul 20, 2015 rated it really liked it
Shelves: 2015, military-sci-fi
Apr 08, 2015 rated it it was amazing  ·  review of another edition
I love these books. Great action, edge of the seat suspense and griping from the first page. If you read the previous books ... well you know what to expect.

Great fun.
Brandi Kosiner (Brandi Breathes Books)
Husband Allan's Review: Jack Campbell’s Lost Fleet series is a hard one to wrap my head around. On one hand, I’m all for a good space saga with a well-designed world and technology, but on the other hand, the characters can be kind of flat and sometimes boring. Having said that however, for me, the positives outweigh the negatives, and I will continue to devour future installments of the adventures of Jack Geary and his fleet.
Allan’s review: 3.25 out of 5.
To get the negative out of the way first
Jo  (Mixed Book Bag)
I was disappointed in Steadfast, the last book of the series, but Campbell is back on track with Leviathan. Once again Geary has to save the Alliance. This time he has to save it from its own mistake. He does not do it alone. The final save comes from a very unlikely source.

If you like space battles, interesting characters, unusual aliens and impossible odds Leviathan is for you. It can read as a stand-alone but read the entire series starting with The Lost Fleet for maximum enjoyment.

Ace publi
May 07, 2015 rated it really liked it
Jack Campbell is one of my favorite Sci-Fi authors and this book “Leviathan “does not disappointing.

Apparently the Alliance Worlds has created a fleet of ships that operate on Artificial Intelligence, only the flag ship has a human on board. The Alliance has kept the existence of the AI fleet a secret. Two syndicate world Star Systems have fallen prey to this “dark fleet.” Now they are attacking Alliance space and Geary goes out to stop them. The dark fleet has the AI programmed with the tactics
L.E. Doggett
Feb 25, 2018 rated it really liked it
Closer to a 3.75. Good descriptions, a plot with some twists and an ending that was something of a surprise. Not sure if the hero really was in that much danger though. I still think Jack is too easy on Black Jack. Still in this one there was more danger than usual. More getting into Black Jack's psychic.

The action scenes were well done and this one had some different ones, which is good.

For a fun read this is good and I recommend it but after you read the ones that came before it. There are
Feb 24, 2018 rated it it was amazing
Shelves: science-fiction
Nothing I enjoy more than when an author brings home a series with a smashing last book.
Per Gunnar
Feb 17, 2015 rated it really liked it  ·  review of another edition
My review of the previous instalment in this series was less than stellar. It was luckily not a bad book but, nonetheless, my disappointment with this series have been growing since some time. Therefore I am quite happy that, to me, this book represents a big improvement compared to the previous books.

One of my gripes with the previous books have been the unbelievable obstructionism and stupidity of the useless politicians, their endless machinations and how great a role this played in the story
MAB  LongBeach
The Lost Fleet is one of the most realistic, least jingoistic military SF series being written. In this installment, Admiral "Black Jack" Geary and his fleet are faced with a serious threat to the Alliance and to the fragile peace from automated warships run amok. The "dark ships" are deliberately hidden from Alliance sensors and are very tough and fast. They are almost more than Geary can handle in a straight-up fight, especially since they were programmed to mimic his tactics. Finding and dest ...more
Anne - Books of My Heart
4.5 stars Review at The Book Nympho.

This is the latest in a spinoff series. The original series is The Lost Fleet ; this series is Beyond the Frontier . It all feels like one series, even one story, as each book picks up where the last one left off. I listened to every book but this one on audio, CDs in my car. I enjoyed them so much and the world feels very comfortable and dear.

The narrator was Christopher Rummel. I enjoyed his voice for the different c
Mar 06, 2015 rated it it was amazing
Shelves: science-fiction
Wow!! Just Wow!!

The last book in the series, Steadfast, was a bit of a let-down. However, with this book Mr. Hemry has once again hit it out of the park.

Some mil-sci-fi authors have been accused of writing war-porn... that is definitely not Mr. Hemry's style. He once again demonstrates the costs and sacrifices that are often made in war as well as the harm that war does to a society and to the people within it, without making a polemic out of it. More than any author I can think of, he clearly d
Mar 24, 2015 rated it really liked it
Recovering from the last installment, "Leviathan" is a strong finish to the Lost Fleet series - if indeed this is the end.

This does seem like a good spot to end it on, though. Astonishingly, Campbell has tied up not only the main conflicts and issues up to this point, but also most of the loose ends of the subplots, and mysteries that have been lingering around since the early days.

This book is chock-full of the space battles that have made this series so popular, raising the stakes the highest
Apr 03, 2015 rated it really liked it
Wow. What a ride.

Black Jack Geary has certainly taken the First Fleet into battles where the odds seem insurmountable, but he's Black Jack and has always managed to scrape through. Now he's facing the dark ships, and their AIs are designed to act and react like he would!

I really enjoy the Lost Fleet novels. There's plenty of action and down-time as well, but when the combat starts I can't put it down. There's plenty of character within these stories as well, and when we lose one it hurts; when
Mayank Agarwal
Jun 30, 2015 rated it it was ok
Read it twenty days back and right now i can't remember much of details, just the overall plot, maybe it's cause all of Campbell's book's are very similar to each other and i had read through them all in under a month in wanting to complete the story. If i had ranked it immediately after reading may have given it a 3 star, now that i can't even remember why i liked it besides it being a lite book will go with a 2 star.

This was suppose to be the last book in the series but it's so open ended that
Andrew Rose
Jun 09, 2015 rated it really liked it
The chickens of the Alliance distrust comes back roost when the automated Black Fleet begins to target Alliance planets and shipping due to conflicting programming. Admiral Geary is once again forced to make hard choices with an aging and broken fleet to take on the newest and most advanced fleet known to man. This was a new wrinkle that hopefully will tie up several political angles that had been in previous books and will allow the series to move forward to the unknown where it functions best.
Ivan Piñeyro
May 15, 2015 rated it liked it
Esta serie ha sido uno de mis placeres culpables.
Es una serie de aventuras espaciales de lo más clásica, de personajes no muy bien desarrollados pero muy entretenida.
Luego de 9 entregas la pasada se sintió un poco floja, pero preparode buena forma este libro.
Aquí la acción es permanente, Jack Black no tiene descanzo.
Sin hacer spoilers el mundo de nuestros personajes cambia, si me preguntaran a mi sería un excelente momento y forma de cerrarla.
Tamer Sadek
May 11, 2015 rated it liked it
Better than Steadfast - easily. But being honest Steadfast was awful so to improve on it wasn't setting the bar particularly high. The series is beginning to suffer from Geary fatigue. There are only so many permutations on the one man vs. the world/galaxy etc...It needs to come to a end now.
Jun 29, 2015 rated it really liked it
What an amazing ending. I don't know if this is the end of the series but it could be. I admit I cried.

You must read the series in order. If you like military spaceship battles, then read this series.
May 07, 2016 rated it really liked it
Shelves: audiobooks
I like Beyond the Frontier series much better than the original one, it has much more diversity: different alien races, their interactions with humans, epic space battles with scheming factions. All of it make these books very enjoyable entertainment.
Oct 01, 2017 rated it it was amazing  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
I Cristian
Apr 29, 2018 rated it it was ok
The only thing that was good about the book was that it finally finished the Black Jack story.
The bad thing is that it did it by more repetitive writing about how Black Jack and Desjani endlessly talk between them with no useful conclusion or moving of the plot forward. To add to this, even the fights are boring now.
After a very long chase, we finally get an end-fight with the ultimate antagonist (the AI "dark" fleet), and it finishes with a deus ex type action. Then we get 10 more pages of "oh,
Apr 01, 2018 rated it really liked it
This review has been hidden because it contains spoilers. To view it, click here.
Sep 26, 2017 rated it liked it
Shelves: read-sci-fi
Nice ending to the post-Syndic war series with the First Fleet leading an effort to defeat a fleet of AI-controlled ships gone berserk. Turns out secret factions of the Alliance government had a fall-back plan if the seat of government at Unity was destroyed. A secret replacement capital and a fleet of ships that wouldn't need crews. Great plan, except the war ended the need for secrecy or the new fleet. Didn't stop the people running the program, though, and they lost control of the dark ships. ...more
May 23, 2018 rated it really liked it  ·  review of another edition
Shelves: read-2018
While the government still tries to hide that it had anything to do with the fleet of AI warships that has already attacked two Syndicate star systems, thereby potentially restarting the war, and is now targeting Alliance systems, Geary's fleet, badly outgunned, must put everything on the line to destroy the out of control ships before they wreak yet more havoc.

Tighter plot, swifter pace, more action and less annoying, pointless bickering between characters bring this book back to the quality of
K.M. Plum
Aug 08, 2017 rated it really liked it
Absolutely loved Leviathan! Imagine taking nautical combat tactics, strategies and terms and superimposing them on three dimensional space. Then toss into the mix the mystery of unnerving alien cultures, the thrill of overwhelming threats beyond your ability to overcome them and the reality of your own government trying to stab the greatest hero it has ever known in the back and you'll have a fair idea of what to expect. Definite must-read for Military and/or Sci-Fi fans alike, but only after en ...more
I love this series. As a whole, it was magnificent and full of characters who caught the imagination and a plot rife with tension, drama and humour.

As a finale book, Leviathan was almost perfect, but not quite. The ending struck a powerful emotional note, and yet, offered too little resolution. If Jack Campbell intends to continue Geery's adventures, then perhaps the incomplete ending can be forgiven. If not, well...

I needed a little more. A little more post-action explanation, a little more emo
Chris Gillies
Jun 02, 2018 rated it it was amazing  ·  review of another edition
Back to the Jack Geary of the 1st 3 books of the original Lost Fleet series, it's a gripping, exciting and fun finale to the Frontier series of books. Although I must confess that I say that with relief, as since book 3 the outcome to each series has been obvious, and the author seems to have lost his way through the middle period of the 11 books. As such, by the 2nd book of the Frontier series I was trudging my way through the books rather than reading them avidly, and I'm glad to say that the ...more
Fredrick Danysh
May 06, 2017 rated it liked it
Shelves: science-fiction
The war with the Syndies is over but a new threat to humanity raises its head. The Alliance developed a fleet of automated warships that are now destroying ships and planets without human controls. Admiral "Black Jack" Geary engages in a mission to hunt them down even though the government is trying to manipulate everything computerized.
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Thoughts on Lost Fleet (& Beyond Frontier) Series? 3 23 Dec 20, 2015 08:11PM  
Goodreads Librari...: two entries 2 14 Oct 09, 2015 07:23AM  
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Jack Campbell is a pseudonym for American science fiction author John G. Hemry.

Librarian Note: There is more than one author in the GoodReads database with this name. See this thread for more information.

John G. Hemry is an American author of military science fiction novels. Drawing on his experience as a retired United States Navy officer, he has written the Stark's War and Paul Sinclair series.
More about Jack Campbell

Other books in the series

The Lost Fleet: Beyond the Frontier (5 books)
  • Dreadnaught (The Lost Fleet: Beyond the Frontier, #1)
  • Invincible (The Lost Fleet: Beyond the Frontier, #2)
  • Guardian (The Lost Fleet: Beyond the Frontier, #3)
  • Steadfast (The Lost Fleet: Beyond the Frontier, #4)

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“it is well that war is so terrible, because otherwise people would grow too fond of it,” 4 likes
“Fine.” Desjani sighed. “Admiral, I recommend we get our intelligence officer up here to see if he can craft lovely poems for the singing spider wolves.” 3 likes
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