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Prison Planet

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Swamp: It's a nice place to die, but you wouldn't want to live there.

Unfortunately, Jonathan Renn didn't have a choice. Framed, tried and convicted, he was dumped on a high-security prison planet where, if the native monsters didn't punch his ticket, his fellow inmates would be glad to try.

Marla Marie Mendez had no choice either - and less luck. Already imprisoned in the body of a cybernetic dog, she was dropped on Swamp with no weapons but her teeth and claws.

All she had was Renn. And all Renn had was a plan: Stay alive. Make his escape. And get revenge on the scum who set him up.

250 pages, Mass Market Paperback

First published January 1, 1989

54 people are currently reading
179 people want to read

About the author

William C. Dietz

124 books452 followers
New York Times bestselling author William C. Dietz has published more than fifty novels, some of which have been translated into German, Russian, and Japanese. He grew up in the Seattle area, served as a medic with the Navy and Marine Corps, graduated from the University of Washington, and has been employed as a surgical technician, college instructor, and television news writer, director and producer. Before becoming a full-time writer Dietz was director of public relations and marketing for an international telephone company. He and his wife live near Gig Harbor, Washington.

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5 stars
95 (29%)
4 stars
122 (37%)
3 stars
86 (26%)
2 stars
19 (5%)
1 star
3 (<1%)
Displaying 1 - 27 of 27 reviews
Profile Image for César Bustíos.
322 reviews115 followers
March 8, 2021
What a fun read this was! Fast, action packed and straight to the point. What more can I ask for? I may be overlooking some development issues like the character's backstory, an abrupt and predictable plot change in the last chapter, but, in the end, it delivers.

I find the idea of prison planets (or moons, thank you RAH) very thought-provoking. Dietz made it very compelling with a self-sustainable economy build around each prison planet, and Swamp's economy was centered on monster hunting. These monsters can be hunted for their skins and then sold to the empire although these monsters are a tough nut to crack, especially for their ability to blend in with the background. We also have human monsters that disguise as something good and friendly, like a philanthropist.

And there are ruins! Yes, it seems that there are ruins scattered on many planets created by a race known as the Builders; they're believed to have been extinct eons ago. Of course, the plot didn't develop in that direction. That could have been good... and now it's starting to feel like a déjà vu, this is not the first time this year I find myself saying the same thing about ruins (I'm not thanking RHA this time for not developing the ruins-on-the-moon plot in Rocket Ship Galileo)
Profile Image for Ebenmaessiger.
421 reviews20 followers
June 29, 2025
i read a lot of bad books, but it’s been some time since i read a dumb book. and the “dumb” here does not mean stupid; better to say “simple.” and “simple” in the way someone would talk about a well-meaning meathead or a golden retriever or a 10 yr old kid eating ice cream. the book takes place in a “simple” moral universe, with a set of “simple” stakes, and foregrounded by some “simple” emotional arcs. there’s not much, then, beyond the surface. and that’s great, because sometimes you don’t want any there there. in terms of the reading experience, it most brings to mind memories of plowing through a host of movie novelizations of dumb guy action adventures as a kid in the 90s (the last action hero one being especially good, if memory serves). all is telegraphed, all is flattened, all bad are punish-ed, and all are entertained.
Profile Image for Christopher M..
Author 3 books8 followers
June 17, 2011
Think "Shawshank Redemption"...in space...ON CRACK!

This book is among my favorites in sci-fi; a pudgy 'city boy' dumped onto a prison planet where the rule is 'kill or be killed' after being found guilty of a crime that he did not commit. To watch the character's transformation from hunted to hunter is awesome and what happens next...well...let's just say that Andy Dufresne could learn a thing or two from Renn...
Profile Image for Charles  van Buren.
1,910 reviews306 followers
September 17, 2017
 Quick, entertaining read by a master, September 17, 2017

This review is from: Prison Planet (Kindle Edition)

This quick, entertaining read is one of sci-fi master William Dietz' early novels, published in 1989. I think it may be his 4th or 5th novel. Prison planet is a stand alone story of no great complexity. An old theme in a sci-fi setting, it is a fine story of individualism, friendship, loyalty, perseverance in the face of extreme hardships and triumph. I would call it a 5 star novel up until the concluding section which I don't think is as strong as the rest. So, 4 stars.
Profile Image for Mark.
95 reviews2 followers
April 3, 2018
Very very good....nice Sci fi without getting to detailed...reminds me i need to read more of Dietz as i have never been disappointed.

the end comes quick, almost like he Dietz was up against a page limit...but the ending is in relation to the whole story, it is just a 1 page wrap up is all...it could be considered sappy too, a nod to Sci Fi action adventures of the past maybe...

The ending in no way invalidates the rest of the book..i will read it again in a few years i am sure.
Profile Image for Tan.
129 reviews1 follower
August 3, 2018
Reading this book felt better than watching movie at cinema nowadays. The story filled with lots of action, a robotic dog, monster, powerful weapon and bad guys. Hollywood should turn this into a movie
Profile Image for Mark Muckerman.
492 reviews30 followers
November 2, 2020
The Curse of the Sci-Fi Pocket Paperback strikes again!!!

What started out as a 3-star story suddenly began to look like a contender for 4-stars, before crashing and burning, leaving only a smoking 2-star ruin by the last page. . .

A strong opening act - diving right into the action and the drama; not deep on character backstory, but enough to move the plot along and to be forgiven in the overall size and context of the work. Act I (Renn's arrival and education on Swamp) is solid - good characters, plot advancement, foreshadowing, action, revenge. Well done.

Act II (the Plot Turn) - new characters are introduced with both clumsiness and contrivance, necessary for the author's plot line, but poorly executed and transparent as a forced plot device. Act II concludes with 2 McGuffins and (at least) 2 unnecessary plot twists (a word used loosely here), all of which quickly wrap up Act II (quickly, but not cleanly nor satisfyingly). Act II effectively fades to black right in the middle of a scene, leaving the reader wondering WTF? What just happened and why does it even matter?

Act III leaps ahead in time and space without a hint of effective segue. Here we find the author Dietz apparently having abandoned all pretense of plot continuity or plausible foundation, and written simply as a weak action narrative with only a tenuous, obvious and forced link to the Chapter 1 intro.

And. . .I swear. . . "they all lived happily ever after" ??!?! whaaaaaat?

UPDATE - after reading my own review and reflecting on the book, TLDR is that it's like the first half was well written and then shelved, only to be dusted off later and a crap second half stitched on to it.
Profile Image for Andrew Ziegler.
308 reviews7 followers
September 28, 2013
I have not read a Dietz novel in almost a decade. This is one of his earlier works. It is a fast read and just like all of his other books. It was like putting on a really comfortable pair of jeans. The characters were just like I remember them, the heroes not too complicated and the villains infinitely killable. It is not a work of writing genius, it is just good and full of action. It is maybe sub-par in its complexity but Dietz remains one of the best combat authors I have read. I wish he would do a quick foray into the 40k universe, it would be epic.
6 reviews
July 20, 2020
Awesome

Great book, I bought it on sale and I'm glad I did. A story that grabs a hold of you and doesn't let go. I highly recommend Mr Dietz's work. I definitely plan to read more in the future.
103 reviews
October 13, 2017
Good fast read

I enjoyed the book from beg to end this books has me wanting explore more of Mr. Dietz books. Look forward to another great adventure.
6 reviews
November 27, 2022
Very entertaining book. The main character was fun. I loved the world that was created on the prison planet.
Profile Image for Monique.
207 reviews
May 5, 2021
The premise of the novel sucked me in, I loved the idea of a swampy, barley hospitable world. It seemed like the perfect blend of Western and survival SF. However, the execution fell far short of expectations.

The novel came in three parts. Part One is Renn and Marla being dumped on the planet and trying to survive. I loved the atmosphere and world building. This part of the novel felt like a survival Western as there were robberies, prostitution, a rundown ratty town and gun battles. “Swamp” (name of the planet) was amazing, I really felt like I was there. The action was a little too violent and over the top. All the battles and fights Renn endured seemed to be written so either Renn was the perfect victim or the perfect killer... it didn’t feel realistic. My main complaint here was the characters, Renn and Marla were horrible and very one-dimensional. Also, Dietz cannot write a female character for the life of him. Renn and Marla instantly fall in love... why? Because they starred at each other? They have seriously no chemistry.

The second part featured Renn and Marla, still on Swamp, as they slowly gain their freedom. Their are alien ruins and a surprise attack. I loved the idea of the ruins and I would probably read another novel that explored the alien civilization behind the ruins. The characters got even worse in this section, Marla became nothing more than a doe eyed love
Profile Image for Lisa.
920 reviews4 followers
September 4, 2015
We start with two characters:
Renn, a trader who has been framed for crimes he didn't commit.
And Marla, whose original body was destroyed in an auto accident and who chose to be put in the body of a cyborg dog in exchange for several years of labor for a corporation and attempted to steal money from it and run away when she discovered that they were never going to let her get out of debt to them.

They're standard, but nice-people characters. Renn is more a good boy who learns to become bad(er) or die and Marla...stays Marla. Kinda saucy and temperamental, but realizing her faults and willing to apologize. The book is titled "Prison Planet", but while you have some nice classic adventure-y moments on the planet, the focus is on these two characters. And their focus is on getting the hell off the planet and getting their lives back. And in the end that made it not a terribly exciting book for me, but a relaxing sequence of events that completed neatly.

I'd say if you want an adventure (Lost World style!) with some strange world moments but don't have much concentration to spare for it, this book was a good ride. If you want to feel completely immersed so that you're drowning in the lives of the characters and breathing the same air they breathe, look elsewhere.
Profile Image for Steven Allen.
1,188 reviews23 followers
June 13, 2015
This was a light, easy read - an old fashioned pot boiler if you will. The book was highly enjoyable, and good escapist literature. It has been a while since I have read any light SciFi, and this was a pleasant book. I like the characters and the near constant action in the book. Sex was mentioned but was not graphic or portrayed, but you knew some characters were having sex, but did not get a blow by blow (sorry couldn't resist). I have read other books by William C. Dietz and have enjoyed all of them.
Profile Image for Eric.
183 reviews9 followers
May 4, 2014
Easy read, light on plot and anything else really, but no major gripes since this is clearly one of Dietz' earlier works. The only things that bothered me were the abrupt changes from one major part of the story to the next. I think if Dietz would have made it into a continuous story (no big jumps in time) it would be have made a big (positive) difference.
72/100
Profile Image for Keira F. Adams.
438 reviews8 followers
March 25, 2016
A short, fun romp about a main framed and dumped on a prison planet. Follows his trials and travails as he works to get free and seek vengeance upon those who framed him. Weak writing for dietz (though to be fair, it was quite early in his career) but was still entertaining enough.
Profile Image for Jay.
15 reviews1 follower
June 12, 2008
Good, simple story. Not much depth, but a good fast read. Read it several times between other books.
Profile Image for Daniel.
25 reviews
September 7, 2011
This was a great book and a quick read. I did not like the ending.
1 review
Read
April 1, 2012
this was the first book i read on my pda over ten years ago and i still like re-reading it, i would have loved a sequel.
Profile Image for Diane.
1,140 reviews41 followers
January 22, 2014
That was fun. It was kind f divided into 3 parts. Survival on the hostile prison planet, scientific excursion, revenge.
Profile Image for Lauren.
746 reviews5 followers
December 3, 2014
Fun but it's got a few plot holes, and jumps around a bit.
146 reviews
August 19, 2008
Read this ages ago, just adding to track what I've read in the past.
Displaying 1 - 27 of 27 reviews

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