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Ever been in prison? Taken a trip to a moon?

Both are dangerous places.

They are even more dangerous when someone wants you dead.

Inspector Sullivan and his team are assigned the task of solving the baffling murders of a Corrections Officer and an inmate. Crimes with no witnesses, no motive, and almost no evidence.

Sullivan knows danger waits on Persephone, the prison moon, and murder is just the beginning.

Betrayal, deception, and corruption all await the Inspector and his team.

Augmented humans, individuals with computer hardware and software integrated into their bodies, and a pair of advanced Artificial Intelligence life forms all play a role in the deadly game of cat and mouse where more than just human life is at stake.

Clones, prison gangs, and powerful outside forces all have a stake in the outcome of Sullivan’s struggle to find the truth.

Join the Sullivan; help him fight the good fight, the only fight he knows! Buy a copy of the hardboiled, futuristic crime noir, Grey Sky Blues.

Another scifi crime noir story in the Inspector Thomas Sullivan Thriller Series!

What other's have to say about Grey Sky Blues!

"Inspector Sullivan is Mike Hammer in space, and he's fast becoming my favorite sleuth in the sci-fi noir genre. In Gray Sky Blues, his series' third adventure, K.C. Sivils delivers on enough raw knuckled action, break neck pacing, and colorful descriptions that the reader won't be able to put down the book until they finish the final page. If you're a fan of classic pulp noir you'll like it... if you like sci-fi too then you'll love it!" 

Matt Abraham – author of The Dane Curse

"As usual, K.C. Sivils has guided his main Character, Inspector Thomas Sullivan in a great thriller. Intrigue and suspense rule the day in Grey Sky Blues. This book is a page-turner that will make you stay up at night. Very well done!"

K. Allen Cross – author of Flight of the Hellcat


284 pages, Kindle Edition

First published October 9, 2017

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About the author

K.C. Sivils

56 books221 followers
Science fiction and classic crime novels have long been favorites of author K.C. Sivils. A fan of past noir masters such as Dashiell Hammett and Raymond Chandler, Sivils also enjoys the current generation of storytellers like Matt Abraham, Renee Pawlish and Alex P. Berg.

The combination of film noir and science fiction in director Ridley Scott’s adaptation of Philip K. Dick’s sci-fi classic Do Androids Dream of Electric Sheep into the masterful Harrison Ford vehicle Blade Runner encouraged him to consume as much of both genre’s as possible.

When not working at his real job, Sivils enjoys his family, his dogs, writing and rocking out to classic rock bands like the Rolling Stones, New Wave rockers The Cars, and the Godfathers of Punk, the Ramones.

Follow Author K.C. Sivils on BookBub at https://www.bookbub.com/profile/k-c-s...

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5 stars
44 (68%)
4 stars
11 (17%)
3 stars
6 (9%)
2 stars
1 (1%)
1 star
2 (3%)
Displaying 1 - 17 of 17 reviews
Profile Image for Zain.
310 reviews
February 13, 2020
Fantastic!

Another fantastic Inspector Thomas Sullivan Thriller! The mixture of science fiction and mystery and suspense makes these books so enjoyable.
Profile Image for Chessy The Cat.
340 reviews28 followers
November 10, 2017
Inspector Sullivan is suspicious when he is called upon to take his team to a prison located on a desolate moon. They are asked to investigate murders that appear to be unrelated other than the lack of motive and evidence. The penal system has its own internal investigators. So why pull the Inspector off-world to usurp their authority?

The gang leaders within the prison are nervous about these murders as they weren’t sanctioned by any of them. For you see, even though there are gangs they still have a code of conduct to which they adhere. And, the thought of an outside investigation happening on their turf challenges their ability to control the prison.

Markeson, Sully’s immediate supervisor is thrilled to send the team off-world. Sarah, the clone with enhanced abilities always makes him nervous. Being a dirty cop and having incorruptible staff snooping around is an annoyance he is happy to relieve himself of even for a short period of time. Who knows? Prisons are dangerous places. Accidents happen.

Sivils’ third novel in the Inspector Thomas Sullivan series, Grey Sky Blues does not disappoint. The writing has become more complex as the supporting characters personalities are expanded. Sivils peppers just enough clues throughout to keep you guessing without losing interest. One could read this book as a standalone since there is enough information about the past intermingled along the way.

Sarah’s past was explored in more depth and it was nice to see her character evolve and mature. We also find out much more about Father Nathan. He isn’t officially part of the team but is called to the prison on business at the same time as Sully. And, Bones, the coroner, is becoming more than a background character. Detective Sergeant Josephson really surprised me with how quickly he has mirrored Sully’s techniques.

Without a doubt, this is the best in the series thus far. The ending was a complete surprise and opens a world of possible sequels. Sivils can’t write fast enough! I am hungry for more.

5 out of 5 stars.

I received this book for free from the author. This in no way affected my opinion of the book or the content of my review.
Profile Image for Bonnye Reed.
4,739 reviews122 followers
December 19, 2021
Kindle Unlimited
Third of a series, Chronicles of Inspector Thomas Sullivan
I love the sifi noir style of K. C. Sivils. Grey Sky Blues is another excellent experience involving Inspector Thomas Sullivan, the 'Pup' Josephson, Father Nathan, Bones, and identical twin sisters Sarah, whom we already know, and Ellie, whom we know only by reputation. And what a personality she will add to this tale... We leave the comforts of Beta Prime and Capital City for the prison colony on the moon Persephone. Normally murders at the Graham Correctional would be investigated internally. Sully has been requested from on high to bring his crew to the prison and do an intense probe into the deaths of a guard and one of a prisoner, both deaths suspicious, both suspected as murder, but the victims were verified alone at the time of injury and death.

There is definitely a mess of massive proportions within the prison. Among the inmates Sarah finds her twin sister, missing for several years. Ellie is not pleased to be found, and there is graft and abuse at every level - but that is actually expected. Graham is a for-profit prison, taking in the most heinous of the galaxy's criminal elements. It is normal, and necessary, to have some of the discipline handled by the 'kings', the prisoners who have appointed themselves in a role of command and won it by hook or by crook.

Sully isn't sure he is going to be able to solve this problem. And he has to get back to Capital City soon if he can get Sarah away before she goes head to head with Ellie. As soon as Bones completes the autopsies, Sully gathers up his crew and head for home. Without Ellie. Sarah is not to be consoled. And Sully finds that he is not through with his detecting on Persephone. There are more deaths and new nuances to the rumors of Corruption, too much money floating around, and of fights posted on pay-for-view and betting gone wild. Sometimes, the bad guys aren't as bad as the good guys. At least in Sivil's worlds.

Reviewed on December 19, 2021, at Goodreads, AmazonSmile, Barnes&Noble, and BookBub. Not available for review on Kobo or GooglePlay.
Profile Image for Saundra Wright.
3,041 reviews14 followers
February 2, 2019
Another terrific Inspector Sullivan thriller! K. C. Sivils continues to expand his realistic future world while turning out gritty noir thrillers. Each of these books is a treat for SciFi buffs and lovers of noir detective fiction.

Sully is tasked with another difficult double murder. This time he and his team are headed for one of Beta Prime’s moons. It isn’t unusual for murder to be committed in a prison, but since one of the victims was a CO, it calls for an outside investigation.

At a glance each murder seems impossible. Both victims were alone in secure areas at the time of their deaths. How could the murders have happened with that being the case?

From the start of the investigation it is obvious something is going on at the prison that the officials don’t want the team to know about. The different groups of prisoners on the other hand seem to want to cooperate with the investigation, each group eager to clear themselves as suspects.

Can Inspector Sullivan discover what is going on behind the scenes? Will it lead him to find justice for the murder victims?
Profile Image for Quentin Feduchin.
415 reviews13 followers
May 1, 2018
This is his third book in the series. There is a pre-the-first book published telling how he ended up with the special eye, which I have bought.
On the whole I like his narratives, they are imaginative and still tell us about the world of police and current affairs, even though about hundreds of years in the future in impossible planets far away..
The only thing that bothers you is some of the poor spelling, words left out and the occasional bad grammar.
I see that he hasn't thanked anyone for their amazing editing, so that's the reason why.
IT NEEDS EDITING, KC!
1,917 reviews21 followers
October 22, 2024
Someone doesn’t like Inspector Sullivan. If Beta Prime wasn’t bad enough he is being sent to investigate a murder on its remote moon where the prison exists. The noir style of the story is a perfect match to the protagonist. The mystery is wrapped around the characters and weaves its way through the backdrop provided by the environment.

If you love a mystery with a tough cop this is your story.
51 reviews
April 4, 2018
Great read spoilt by sloppy editing... but don't be put off.

As others have said the one thing that lets this book down, on Kindle at least, is the sloppy proof reading and spell checking. But if you can read in the right words you will be fine. This is another cracking edition of the series and I hope there are many more to come.
6 reviews
September 4, 2018
Grey Sky Blues by K.C. Sibilant

I got this book for free and I am writing this review because I wanted too. I am not normally a Sci. Fiction fan,but after I read The Predator & The Prey I was hooked. This is a great book and would suggest to all readers to read this great series!
Profile Image for Claudia.
2,994 reviews37 followers
November 13, 2017
This is the third book in the series, and it shows. The characters are more complex and the writing more involving. The plot is interesting, and walks well the thin line between telling too much or too little, keeping the story interesting and compelling.

A great read!
165 reviews
March 18, 2018
Great story

This was one of the best stories in this series so far but you need a good editor. Other than that excellent character growth and awesome world building. Looking forward to reading more of Sully's adventure.
Profile Image for Darren.
18 reviews1 follower
November 12, 2017
Another good one in the Inspector Sullivan series.
243 reviews2 followers
April 14, 2018
Another great story in this series

Another great read full of action and twists to keep you guessing with the characters that make this series such a good read.
306 reviews1 follower
October 30, 2018
Superior writing..plotline,characters! I truly enjoy this author's novels about a ex-space marine turned cop.The whole series is a must-read as far as I am concerned.
Profile Image for Rosemary.
4,120 reviews73 followers
September 26, 2018
Grey Sky Blues - a review by Rosemary Kenny

Inspector 'Sully' Sullivan is sent to prison planet Persephone to investigate the Graham Correctional Facility's two unexpected murders, in K.C Sivils' excellent thriller Grey Sky Blues, an unusual urban sci-fi murder-mystery police investigation.
What Sully finds is corruption, destruction and vice of every kind is rife, though the governor Warden Dale Corona and his (power behind the throne) Deputy Gravestone insist there was really no need for him to come, as they'd have carried out their own investigation.
Who is/are the true villains? Who is Father Nathan - and why does he accompany Sully to the jail?
Why is Sarah really on the planet? What does she hope to achieve while there? What is unusual about her 'family'?
Who is Dmitri and why does he agree to help Sullivan? What does he tell Sully about what goes on behind the scenes at the jail?
How are the victims murdered - and how are they connected? Where is Sully nearly killed - and who saves him?
A fascinating, edge-of-your-seat thriller that will haunt you for a long time to come - Grey Sky Blues has many twists and turns leading to an unexpected conclusion. Get your copy of this and the other books in K C Sivils' wonderful series as soon as you can- then buckle up for a bumpy, exciting ride!
223 reviews4 followers
February 2, 2018
I won this book from Goodreads and really enjoyed it. I don’t read a lot of science fiction but this book was also a good murder mystery which is what I like to read.
4 reviews2 followers
October 1, 2019
excellent addition to the series.
the characters continue to develop & surprise us.
Displaying 1 - 17 of 17 reviews