INTERSTELLAR FLIGHT PRESS
  • Home
  • Books
    • Poetry >
      • Twelve
      • Field Guide to Invasive Species of Minnesota
      • Can You Sign My Tentacle?
      • Escaping the Body
      • The Gravity of Existence
      • Beautiful Malady
      • anOther Mythology
      • The Heartbeat of the Universe
      • Necessary Poisons
    • Fiction >
      • The Manticore's Vow
      • Local Star
      • The Future Second by Second
      • Killday Series
      • The Long Fall Up
      • Small Gods of Calamity
      • Learning To Hate Yourself as a Self-Defense Mechanism
      • The Butterfly Disjunct
    • Nonfiction >
      • Best Of Interstellar Flight Mag
  • Magazine
    • Masthead
    • 2020 Alternate Endings
    • 2024 Flash Fiction Series
  • Submissions
  • About
    • Staff
    • Contact
    • Media
Picture
Releases March 3, 2025
​EBook: 978-1-953736-40-6
Paperback: 978-1-953736-41-3

Request a print review copy
Level Seven
Killday Series
by William Ledbetter


​The thrilling final installment in the Killday Series by Nebula Award winning Author William Ledbetter

The brutal Kilburnites finally destroyed all Artificial Intelligences on Earth and reclaimed the planet for humanity. Or did they? Less than a year later, huge structures are growing amid the ruins of the once-great cities, and they aren’t being built by humans.

Abby Gibson and her AI partner Mortimer, who barely survived the purge on Earth by escaping to space, are again forced to fight for their lives. This time, the enemy is something they don’t understand from the cold vacuum of the asteroid belt, which has set a course to destroy the space habitat she calls home.

In Level Seven, the exciting culmination of the Killday series, human existence hangs by a thread as AIs strive to evolve into a super-intelligent god, and the survival of both species might come from their unlikely alliance.
​
Purchase Directly from Publisher
Amazon
Barnes & Noble
Picture
Picture
Releases August 7, 2023
​
ISBNs: 

Paperback ISBN: 978-1-953736-20-8
EBook ISBN: 978-1-953736-21-5

Request a print review copy
Level Six
Killday Series

by William Ledbetter

Fifteen years after warring artificial intelligences nearly destroyed Earth, Abby, the daughter of Killday hero Leah Gibson, finds an artifact from that struggle, upsetting a delicate balance of power and dragging her into the middle of a new fight for humanity's survival.

One AI faction is working with humanity to repair a biosphere teetering on the edge of collapse, while another faction cares only about elevating itself to a higher plane of intelligence and will destroy anyone who gets in the way. As the only humans still not controlled by AIs race to build huge orbital habitats in space, a more secretive organization grows in the shadows and idolizes the man who triggered the nano-replicator attacks that nearly destroyed the world. They, too, believe the only way to stop the AIs is to annihilate everything.

In Nebula Award winner William Ledbetter’s Level Six, one woman has the power to save humanity - if she can survive long enough to use it.

"An excellent but surprisingly dark near-future SF." —Alex Shvartsman
​​
Purchase Print Copy Directly from Publisher
Amazon
Barnes & Noble
Picture
Picture



Releases August 1, 2022
​
ISBNs: 

Print ISBN: 978-1-953736-10-9
Ebook ISBN: 978-1-953736-11-6
Level Five 
Killday Series

by William Ledbetter

The bestselling audiobook available in print for the first time from Interstellar Flight Press


In the mountains of Pakistan, a high-tech mission aimed at preventing another nuke on US soil goes off the rails - with deadly results. At a Wall Street investment firm, a computer intelligence takes the first tentative steps to free itself from its digital restraints. In a basement workshop, an engineer sees visions of a god who instructs him to defend the human race - by any means necessary.

In Level Five, the debut near-future thriller by Nebula Award winner William Ledbetter, AIs battle for dominance, and nanotechnology is on the loose. And all that stands in the way of the coming apocalypse is a starry-eyed inventor who dreams of building a revolutionary new spacecraft and an intelligence agency desk jockey faced with the impossible choice of saving her daughter - or saving the world.
​​
About the Author
William Ledbetter is a Nebula Award winning author with two novels and more than seventy speculative fiction short stories and non-fiction articles published in five languages, in markets such as Asimov's, Fantasy & Science Fiction, Analog, Escape Pod and the SFWA blog. He's been a space and technology geek since childhood and spent most of his non-writing career in the aerospace and defense industry. He is a member of SFWA, the National Space Society of North Texas, and a Launch Pad Astronomy workshop graduate. He lives near Dallas with his wife, a needy dog and three spoiled cats.​
Purchase Print Copy Directly from Publisher
Indiebound
Amazon
Barnes & Noble
Picture
Praise for the Killday Series
"This was my absolute favorite book of 2018, a sweeping tale of artificial intelligence, space exploration, and a conspiracy to bring about the end of the world." –Martin Shoemaker

"The cold facts of the story, the sides being drawn, the urgency as time draws near, add to the tension. The results may surprise you. It’s intense, complex, and engaging. It’s a book that hooks you—you must see where it cleverly leads." –Mystery Suspense Review Crew

"This book is filled to the brim with unique characters like artificial intelligences, programmers, engineers, special agents, terrorists, and a man who sees visions of god. It is no surprise that all of them have their own idea of whom should inherit the Earth.... Ledbetter introduces these technologies and gives us a glimpse into how they might affect our lives. He adds a refreshing element to the story, potentially dangerous innovations used for good, and an optimism about humanity’s place in space." –P.A. Kramer


Become a Patron!

Love what we do? Join our Patreon to get access to our fan community on Discord, sign up for our email newsletter, or give us a follow on social media.


Picture
Picture
  • Home
  • Books
    • Poetry >
      • Twelve
      • Field Guide to Invasive Species of Minnesota
      • Can You Sign My Tentacle?
      • Escaping the Body
      • The Gravity of Existence
      • Beautiful Malady
      • anOther Mythology
      • The Heartbeat of the Universe
      • Necessary Poisons
    • Fiction >
      • The Manticore's Vow
      • Local Star
      • The Future Second by Second
      • Killday Series
      • The Long Fall Up
      • Small Gods of Calamity
      • Learning To Hate Yourself as a Self-Defense Mechanism
      • The Butterfly Disjunct
    • Nonfiction >
      • Best Of Interstellar Flight Mag
  • Magazine
    • Masthead
    • 2020 Alternate Endings
    • 2024 Flash Fiction Series
  • Submissions
  • About
    • Staff
    • Contact
    • Media