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Sunless: A Post Apocalyptic Thriller
They survived the collapse of America. But the true nightmare is locked aboard a high-speed train to hell.
John Kerrigan has sacrificed his soul to keep his family alive. But his daughter, Emily, has been forged into a ruthless killer. And now she's trapped aboard Cerberus, a heavily armored Cabal train hurtling toward a fortified mountain base.
To get her back, John and his crew must pull off a suicide boarding at sixty miles an hour.
But General Graves isn't just transporting soldiers. Deep inside Car Seven lies something worse. A sedated, mutated survivor of a 100% lethal bioweapon. Subject Zero. The only living thing to survive the virus and become something far more dangerous.
And Graves has realized that the key to unlocking its secrets lies in Kerrigan blood.
Outside, a ruthless scavenger army is closing in on the train. Back home, John's remaining friends are facing a brutal slaughter. And aboard Cerberus, Emily is running out of time.
John is trapped. Every move demands a sacrifice. Every second brings him closer to losing everything.
To save his daughter, John must become the deadliest thing on the tracks.
But how do you kill a god?
The pulse-pounding continuation of the John Kerrigan survival series. Perfect for fans of Kyla Stone, Jack Hunt, and A.G. Riddle.
This is Book 7 of The Dark Skies series.
Dark A Kerrigan Survival Saga
ECHOES OF THE DARK SUN (Book 1)
DARK HORIZON (Book 2)
VEILED SHADOWS (Book 3)
FADING LIGHT (Book 4)
TIDES OF VENGEANCE (Book 5)
RUSTED SUN (Book 6)
SUNLESS (Book 7)
Dark Warlord Territories
A Town at War (Book 1)
Into the Fray (Book 2)
Forged in Fire (Book 3)
Among Wolves (Book 4)
John Kerrigan has sacrificed his soul to keep his family alive. But his daughter, Emily, has been forged into a ruthless killer. And now she's trapped aboard Cerberus, a heavily armored Cabal train hurtling toward a fortified mountain base.
To get her back, John and his crew must pull off a suicide boarding at sixty miles an hour.
But General Graves isn't just transporting soldiers. Deep inside Car Seven lies something worse. A sedated, mutated survivor of a 100% lethal bioweapon. Subject Zero. The only living thing to survive the virus and become something far more dangerous.
And Graves has realized that the key to unlocking its secrets lies in Kerrigan blood.
Outside, a ruthless scavenger army is closing in on the train. Back home, John's remaining friends are facing a brutal slaughter. And aboard Cerberus, Emily is running out of time.
John is trapped. Every move demands a sacrifice. Every second brings him closer to losing everything.
To save his daughter, John must become the deadliest thing on the tracks.
But how do you kill a god?
The pulse-pounding continuation of the John Kerrigan survival series. Perfect for fans of Kyla Stone, Jack Hunt, and A.G. Riddle.
This is Book 7 of The Dark Skies series.
Dark A Kerrigan Survival Saga
ECHOES OF THE DARK SUN (Book 1)
DARK HORIZON (Book 2)
VEILED SHADOWS (Book 3)
FADING LIGHT (Book 4)
TIDES OF VENGEANCE (Book 5)
RUSTED SUN (Book 6)
SUNLESS (Book 7)
Dark Warlord Territories
A Town at War (Book 1)
Into the Fray (Book 2)
Forged in Fire (Book 3)
Among Wolves (Book 4)
354 pages, Kindle Edition
Published July 24, 2026
About the author
Joseph A. Sackett
23 books51 followersJoseph A. Sackett is a bestselling author and Kindle All-Star Award winner with more than a dozen novels in print. He writes post-apocalyptic fiction and horror.
A retired veteran with over twenty years in America's special operations community, he worked alongside SOCOM, JSOC, and MARSOC and deployed with them into hostile environments. He brings that to every firefight, every survival decision, and every moral line his characters have to cross.
His post-apocalyptic work blends the brutal intensity of Pierce Brown with the relentless pacing of Kyla Stone. His horror draws from the dark corners explored by Joe Hill and the visceral tension of David Sodergren.
If you want stories that hit hard and stay with you, you're in the right place.
Originally from Minnesota, Joseph now lives in Florida with his fiancée, where he runs Ravaged Realms LLC and continues building his universe of broken worlds and the people trying to survive them.
Want a free post-apocalyptic thriller? Get Echoes of the Fallen at https://go.ravagedrealms.com/9gm
Signed copies, the full catalog and more: https://ravagedrealms.com
A retired veteran with over twenty years in America's special operations community, he worked alongside SOCOM, JSOC, and MARSOC and deployed with them into hostile environments. He brings that to every firefight, every survival decision, and every moral line his characters have to cross.
His post-apocalyptic work blends the brutal intensity of Pierce Brown with the relentless pacing of Kyla Stone. His horror draws from the dark corners explored by Joe Hill and the visceral tension of David Sodergren.
If you want stories that hit hard and stay with you, you're in the right place.
Originally from Minnesota, Joseph now lives in Florida with his fiancée, where he runs Ravaged Realms LLC and continues building his universe of broken worlds and the people trying to survive them.
Want a free post-apocalyptic thriller? Get Echoes of the Fallen at https://go.ravagedrealms.com/9gm
Signed copies, the full catalog and more: https://ravagedrealms.com
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Displaying 1 - 5 of 5 reviews
July 31, 2026
After years of fighting to survive in a world devastated by catastrophe, Kerrigan and his allies face their darkest chapter yet. Resources have become much more scarce and man have the stakes been raised higher and higher! Joseph did it again with this high octane novel. Well done!
August 18, 2026
A taunt, edge of your seat read! Joseph does it again when this time, Kerrigan and his group face even more horrors and threats to their broken society. The action is fast paced, the violence is out of this world, and the enemies/threats keep you tuned in and turning the pages. Can't wait for his next one.
July 25, 2026
This starts off at high octane pace & the violence & mayhem just continues right up until the very end! Set in a broken america, warring fractions fight to just try & survive another day, whilst a murderer is on the loose! Good tension & excitement, a gripping read!
October 15, 2026
Post Apocalypse Saga!!
I cannot swipe fast enough through this series! Well done, wish it was a mini series!!!!!! Oh but who would play John????? Emily? Vorn???
On to the next which I believe is the last in this series. I will have such a void. If you are into end of the world, action packed, survival against the villains, this series is for you!!!
Some of your favorite characters are going to die and some of your posted hated Villains seem to survive.... Or do they? I'll find out in the next book!
I cannot swipe fast enough through this series! Well done, wish it was a mini series!!!!!! Oh but who would play John????? Emily? Vorn???
On to the next which I believe is the last in this series. I will have such a void. If you are into end of the world, action packed, survival against the villains, this series is for you!!!
Some of your favorite characters are going to die and some of your posted hated Villains seem to survive.... Or do they? I'll find out in the next book!
October 7, 2026
Sackett does a great job maintaining the feeling that nowhere is truly safe. The pacing keeps the story moving, while the survival elements and military background give the book a level of realism that makes the threats feel believable. The characters also continue to develop in ways that make you invested in what happens to them.
Displaying 1 - 5 of 5 reviews