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The Oxygen Farmer

The Oxygen Farmer

By Colin Holmes
Categories: Fiction, Space Exploration, General, Espionage, Action & Adventure
Imprint: CamCat Books
Hardcover : 9780744306675, 320 pages, December 2023
Ebook (EPUB) : 9780744306736, 320 pages, December 2023
Paperback (Large print edition) : 9780744306729, 450 pages, December 2023
Audiobook (Unabridged edition) : 9780744306743, 304 pages, December 2023

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A cranky old oxygen farmer on the Moon stumbles onto a century old secret that threatens to derail the first mission to Mars, possibly destroy the Luna colony, and maybe even life on Earth.


A 2024 IBPA Benjamin Franklin Award Silver Medal Winner

“Holmes crafts a twisty thriller with conspiracies to spare . . .” —Shelf Awareness

“An action-packed thriller perfect for fans of Andy Weir and Jack McDevitt.” —Kirkus Reviews

Sabotage, murder, cover-ups. Just another day on the Moon.

After 35 years of living on the Moon, cranky old oxygen farmer Millennium Harrison has stumbled onto a hidden facility in the shadows of the Slayton Ridge Exclusion Zone with a radiation leak and a deadly secret. Mil's discovery leads to the death of a young astronaut, sabotage, murder, and cover-ups that may go all the way to the Chief Administrator of the space agency. Unfortunately, she happens to be Mil's estranged daughter, busy trying to secure her own legacy—the first international mission to Mars.

With time ticking down to a limited launch window, enemies, friends, and even family may do anything to ensure the truth doesn't come out. Or will history finally catch up with a deadly scheme that has the potential to destroy the moon and eradicate all life on Earth? It seems the planet’s only hope is a cantankerous guy who never really liked those people in the first place.

For readers who enjoy 2001: A Space Odyssey by Arthur C. Clarke, Artemis by Andy Weir, and MoonFall by Jack McDevitt.


  • Winner, 2024 IBPA Benjamin Franklin Silver Award - Science Fiction & Fantasy 2024


“A cantankerous octogenarian astronaut finds himself in over his head when he accidentally stumbles across a deadly secret hidden on the surface of the moon . . . An action-packed thriller perfect for fans of Andy Weir and Jack McDevitt.” Kirkus Reviews

“VERDICT With a fascinating fictional scenario that connects history with the future, Holmes once again tackles conspiracy, subterfuge, and murder, but he takes it out of this world in his latest novel. Readers who enjoy Andy Weir’s novels, books like The Manchurian Candidate and 2001: A Space Odyssey, and TV shows such as Babylon 5 will want to put this one on their to-read lists.” Library Journal

“This space mystery is a page-turner rooted in its convincing and compelling protagonists and their well-written relationships . . . Sf fans will enjoy this rich novel full of good world building, mysterious space intrigue, and dry humor.” Booklist

“Holmes crafts a twisty thriller with conspiracies to spare . . . this is a rollicking science-fiction thriller that will please fans of Andy Weir.” Shelf Awareness