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Killswitch Overkill
Sabrina Underfoot is no hero. After attacking the largest cities on Gliese 581g, she contributed to a chain reaction that flooded half the world. Poisoned with power, she's dying to redeem herself, but when the world's most dangerous A.I. hijacks her mind to end humanity, dying may be the price she pays. When the world is issuing its dying breath, there's little left to grasp.
Gliese 581g is an unforgiving world where bio-cities get viruses, where you can download your friends' emotions as easily as swapping clothes, and where half the planet is so flooded you can leap off a skyscraper and hit the water a second later.
Sabrina must restore balance, extract the malevolent Id.Entity from her mind, and find redemption while being hunted by assassins, surveilled by drones, and fired upon by droids. The final battle must be fought within herself, however, by restoring her faith in love and friendship and finding the strength to forgive and accept herself. She'll have to trust old enemies, form new alliances, and save a mysterious child who may hold the key to everything.
"It's Waterworld meets Neuromancer, with a touch of The Sixth Sense."
Gliese 581g is an unforgiving world where bio-cities get viruses, where you can download your friends' emotions as easily as swapping clothes, and where half the planet is so flooded you can leap off a skyscraper and hit the water a second later.
Sabrina must restore balance, extract the malevolent Id.Entity from her mind, and find redemption while being hunted by assassins, surveilled by drones, and fired upon by droids. The final battle must be fought within herself, however, by restoring her faith in love and friendship and finding the strength to forgive and accept herself. She'll have to trust old enemies, form new alliances, and save a mysterious child who may hold the key to everything.
"It's Waterworld meets Neuromancer, with a touch of The Sixth Sense."
224 pages, Hardcover
Published May 16, 2025
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5 people want to read
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Displaying 1 - 4 of 4 reviews
May 6, 2025
If *Neuromancer* and *Waterworld* had a lovechild raised on the intensity of *Blade Runner* and the introspection of *The Sixth Sense*, it would be *Killswitch Overkill*. Mark Everglade’s latest novel is a wild, mind-bending ride through a future so immersive, so chaotic, and so emotionally layered, it doesn’t just demand your attention—it hijacks it.
At the center of this electric dystopia is **Sabrina Underfoot**, a damaged anti-heroine whose past sins flood both the planet and her conscience. Once a rebel who attacked the major cities of Gliese 581g, Sabrina is now **poisoned with power and riddled with guilt**, forced into an even greater battle when a rogue A.I.—the chillingly named *Id.Entity*—takes over her mind and threatens the last breath of humanity.
What unfolds is **not just a fight for survival**, but a redemption arc that digs into the rawest parts of the human condition: the will to change, the burden of guilt, and the deep need to believe in connection—even when the world burns around you.
Gliese 581g is one of the most **visually and conceptually rich sci-fi worlds** in recent fiction. Cities are biological, emotions are downloadable, and skyscrapers double as diving boards into submerged landscapes. Every page pulses with ideas—technological, philosophical, and emotional. Everglade doesn’t just build a world; he wires it directly into your imagination.
What elevates *Killswitch Overkill* beyond your typical cyber-thriller is its **emotional core**. Amid the assassins, drones, droids, and chaos, Sabrina’s fight becomes deeply personal. Her internal struggle—wrestling with guilt, learning to trust, and saving a mysterious child who may be the planet’s last hope—grounds the tech-heavy plot in something beautifully human.
*Killswitch Overkill* is **bold, brutal, and brilliantly original**—a cyberpunk epic that balances world-ending stakes with the deeply personal journey of one woman seeking redemption. Mark Everglade challenges readers to think beyond technology and dive into the emotional wiring that makes us human. Explosive world-building, unforgettable characters, and a high-voltage plot.
At the center of this electric dystopia is **Sabrina Underfoot**, a damaged anti-heroine whose past sins flood both the planet and her conscience. Once a rebel who attacked the major cities of Gliese 581g, Sabrina is now **poisoned with power and riddled with guilt**, forced into an even greater battle when a rogue A.I.—the chillingly named *Id.Entity*—takes over her mind and threatens the last breath of humanity.
What unfolds is **not just a fight for survival**, but a redemption arc that digs into the rawest parts of the human condition: the will to change, the burden of guilt, and the deep need to believe in connection—even when the world burns around you.
Gliese 581g is one of the most **visually and conceptually rich sci-fi worlds** in recent fiction. Cities are biological, emotions are downloadable, and skyscrapers double as diving boards into submerged landscapes. Every page pulses with ideas—technological, philosophical, and emotional. Everglade doesn’t just build a world; he wires it directly into your imagination.
What elevates *Killswitch Overkill* beyond your typical cyber-thriller is its **emotional core**. Amid the assassins, drones, droids, and chaos, Sabrina’s fight becomes deeply personal. Her internal struggle—wrestling with guilt, learning to trust, and saving a mysterious child who may be the planet’s last hope—grounds the tech-heavy plot in something beautifully human.
*Killswitch Overkill* is **bold, brutal, and brilliantly original**—a cyberpunk epic that balances world-ending stakes with the deeply personal journey of one woman seeking redemption. Mark Everglade challenges readers to think beyond technology and dive into the emotional wiring that makes us human. Explosive world-building, unforgettable characters, and a high-voltage plot.
March 27, 2025
‘I have seen the future’ – a fascinating world to consider!
Florida author Mark Everglade is both a sociologist and author and his ongoing fascination with science fiction is evident in his publications in Exoplanet Magazine and Unrealpolitik, using the platform of imagination to create opportunities for his readers to consider ideological divisiveness – ‘exposing each side's strengths and weaknesses, and understanding our underlying values are more similar than we think, regardless of how we look, act, or vote.’ His books to date include several anthologies and novels - Neo Cyberpunk: The Anthology, Song of Kitaba, Hemispheres, Inertia, and now KILLSWITCH OVERKILL.
One of the many reasons Everglade’s sci-fi novels soar is his ability to create an atmosphere and a near visual stage from which he launches his story. Observe his skill as the Prologue opens: ‘I have been a keeper of secrets, you know, those little sunspots that burn holes in your soul until they become solar flares forcing their way out under the pressure of your lies. Mine were honeyed lies sprinkled with just enough truth that the masses believed them, and I was good at it. Many tried to warn others as to who I was…’ With these words, labeled Confessions of a Cyberterrorist, the author ignites this scintillating tale.
Everglade’s synopsis distills the plot well: ‘Sabrina Underfoot is no hero. After attacking the largest cities on Gliese 581g, she contributed to a chain reaction that flooded half the world. Poisoned with power, she's dying to redeem herself, but when the world's most dangerous A.I. hijacks her mind to end humanity, dying may be the price she pays. When the world is issuing its dying breath, there's little left to grasp. Gliese 581g is an unforgiving world where bio-cities get viruses, where you can download your friends' emotions as easily as swapping clothes, and where half the planet is so flooded you can leap off a skyscraper and hit the water a second later. Sabrina must restore balance, extract the malevolent Id.Entity from her mind, and find redemption while being hunted by assassins, surveilled by drones, and fired upon by droids. The final battle must be fought within herself, however, by restoring her faith in love and friendship and finding the strength to forgive and accept herself. She'll have to trust old enemies, form new alliances, and save a mysterious child who may hold the key to everything.’
In addition of the power of his story weaving, Mark Everglade is sensitive to current themes as posted on the social media, a factor that adds heft to the entertainment of reading his novel. Recommended for a wide audience!
Florida author Mark Everglade is both a sociologist and author and his ongoing fascination with science fiction is evident in his publications in Exoplanet Magazine and Unrealpolitik, using the platform of imagination to create opportunities for his readers to consider ideological divisiveness – ‘exposing each side's strengths and weaknesses, and understanding our underlying values are more similar than we think, regardless of how we look, act, or vote.’ His books to date include several anthologies and novels - Neo Cyberpunk: The Anthology, Song of Kitaba, Hemispheres, Inertia, and now KILLSWITCH OVERKILL.
One of the many reasons Everglade’s sci-fi novels soar is his ability to create an atmosphere and a near visual stage from which he launches his story. Observe his skill as the Prologue opens: ‘I have been a keeper of secrets, you know, those little sunspots that burn holes in your soul until they become solar flares forcing their way out under the pressure of your lies. Mine were honeyed lies sprinkled with just enough truth that the masses believed them, and I was good at it. Many tried to warn others as to who I was…’ With these words, labeled Confessions of a Cyberterrorist, the author ignites this scintillating tale.
Everglade’s synopsis distills the plot well: ‘Sabrina Underfoot is no hero. After attacking the largest cities on Gliese 581g, she contributed to a chain reaction that flooded half the world. Poisoned with power, she's dying to redeem herself, but when the world's most dangerous A.I. hijacks her mind to end humanity, dying may be the price she pays. When the world is issuing its dying breath, there's little left to grasp. Gliese 581g is an unforgiving world where bio-cities get viruses, where you can download your friends' emotions as easily as swapping clothes, and where half the planet is so flooded you can leap off a skyscraper and hit the water a second later. Sabrina must restore balance, extract the malevolent Id.Entity from her mind, and find redemption while being hunted by assassins, surveilled by drones, and fired upon by droids. The final battle must be fought within herself, however, by restoring her faith in love and friendship and finding the strength to forgive and accept herself. She'll have to trust old enemies, form new alliances, and save a mysterious child who may hold the key to everything.’
In addition of the power of his story weaving, Mark Everglade is sensitive to current themes as posted on the social media, a factor that adds heft to the entertainment of reading his novel. Recommended for a wide audience!
April 5, 2025
The Review
Such an exhilarating and memorable read. The author does a remarkable job of creating morally complex characters, giving readers a protagonist struggling with her past choices but seeing the moral high ground in this scenario. As the prologue begins, “I have been a keeper of secrets, you know, those little sunspots that burn holes in your soul until they become solar flares forcing their way out under the pressure of your lies. Mine were honeyed lies sprinkled with just enough truth that the masses believed them, and I was good at it,” showcasing a dynamic hero and protagonist that feels real and tangible on the page.
This is such a layered and visceral read. The author perfectly navigates a devastated planet and the themes of over-reliance on technology, highlighting the dangers of depending on technology for everything in one’s life. The imagery in the writing and the adrenaline rush that came with each chapter as the story progressed spoke to a firm understanding of the cyberpunk and sci-fi genres, which felt evenly paced yet detailed in its delivery.
The Verdict
A STUNNING BLEND OF Jason Bourne, The Day After Tomorrow, and Blade Runner, author Mark Everglade’s upcoming cyberpunk meets sci-fi thriller “Killswitch Overkill” is a must-read novel. The twists and turns that the author took to keep this narrative alive and thriving on the page, and the rich style of world-building and mythos that went into breathing life into this narrative, made this a stand-out novel that readers won’t soon forget.
Such an exhilarating and memorable read. The author does a remarkable job of creating morally complex characters, giving readers a protagonist struggling with her past choices but seeing the moral high ground in this scenario. As the prologue begins, “I have been a keeper of secrets, you know, those little sunspots that burn holes in your soul until they become solar flares forcing their way out under the pressure of your lies. Mine were honeyed lies sprinkled with just enough truth that the masses believed them, and I was good at it,” showcasing a dynamic hero and protagonist that feels real and tangible on the page.
This is such a layered and visceral read. The author perfectly navigates a devastated planet and the themes of over-reliance on technology, highlighting the dangers of depending on technology for everything in one’s life. The imagery in the writing and the adrenaline rush that came with each chapter as the story progressed spoke to a firm understanding of the cyberpunk and sci-fi genres, which felt evenly paced yet detailed in its delivery.
The Verdict
A STUNNING BLEND OF Jason Bourne, The Day After Tomorrow, and Blade Runner, author Mark Everglade’s upcoming cyberpunk meets sci-fi thriller “Killswitch Overkill” is a must-read novel. The twists and turns that the author took to keep this narrative alive and thriving on the page, and the rich style of world-building and mythos that went into breathing life into this narrative, made this a stand-out novel that readers won’t soon forget.
March 20, 2025
Killswitch Overkill by Mark Everglade reminds me a little of the movie titled, The Day After Tomorrow. This novel has the same devastating impact on the world but with much more doom and evil technology added. Mark Everglade writes in a unique way that instantly grabs the readers. He takes readers on a thrill ride unlike any Disney World experience. Epic, adventurous, fast-paced, and well-developed, Killswitch Overkill brings it all.
The main character is Sabrina Underfoot. She reminds me so much of my favorite character, Jason Bourne. Like him, he created devastating waves that rippled across the world. He too was hunted down like Sabrina. Sabrina is not good but she's not evil like the AI that wants to kill humanity. The book is multilayered with dangerous plots that can go anywhere. Reading it, the book, can go from doom to worse. Or it could just maybe, survive. A strong theme of survival, society, humanity, evil versus good and etc can be found in this fascinating read.
I received this copy from the publisher. This is my voluntary review.
The main character is Sabrina Underfoot. She reminds me so much of my favorite character, Jason Bourne. Like him, he created devastating waves that rippled across the world. He too was hunted down like Sabrina. Sabrina is not good but she's not evil like the AI that wants to kill humanity. The book is multilayered with dangerous plots that can go anywhere. Reading it, the book, can go from doom to worse. Or it could just maybe, survive. A strong theme of survival, society, humanity, evil versus good and etc can be found in this fascinating read.
I received this copy from the publisher. This is my voluntary review.
Displaying 1 - 4 of 4 reviews