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United States of Z - Book 6: A Post-Apocalyptic Thriller

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The fight is over. Hope is dead.

United States of Book Six
The final chapter.

Vargo is gone. The missiles are silent. And the cure is farther away than ever.

Dr. Halbrook has vanished without a trace—taking humanity’s last chance with him. No body. No answers. Only the certainty that without the cure, the world will rot until nothing is left.

Mark Moon has one final option.

With fractured intelligence and nothing left to lose, Moon heads east into the frozen ruins of Russia, hunting the only remaining antidote known to exist. No backup. No extraction. No promise of survival.

The dead no longer matter.
Time does.

One man. One mission. If he fails, the United States dies with him.

242 pages, Kindle Edition

Published March 13, 2026

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Olin Lester

23 books31 followers

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Displaying 1 - 2 of 2 reviews
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262 reviews6 followers
March 19, 2026
What a huge let down. Any semblance of humanity or character built over the last 5 books down the drain. I cant get over the idiocy of bringing contaminated blood in glass vials in a makeup bag and actually killing other service members. Or unleashing the virus on a populace who was innocent. It would eventually spread across the whole landmass and cause BILLIONS of deaths! Is this actually the real book? not trolling? two psychopaths kill billions of people?
This entire review has been hidden because of spoilers.
13 reviews
March 24, 2026
Entire Series is AWESOME

I can’t more highly recommend this series! Awesome from page 1 of book 1 to the very end of book 6. Characters are well developed, and Mark Moon is THE best of all.
Displaying 1 - 2 of 2 reviews