Skip to content Skip to footer

Coming April 28

The Worst Enemies Aren't Zee

Omega has survived the Zee, brutal combat, and a world coming apart at the seams. But when her squad keeps taking hits and their position keeps getting compromised, she can’t stop asking the question she doesn’t want to answer: is the threat coming from inside?

With desperate refugees under her protection and an immune survivor called La Madre who may hold the key to ending the plague, Omega is running out of time — and people she can trust. The United Forces want the cure. Whether they want it for the right reasons is another matter entirely.

Some enemies wear uniforms. Some truths can’t be survived intact.

Launching April 28, 2026

Preorder Now →

New to the series? Start with Initiation.

Meet O.T. Riesen in Person

I'll be signing books and talking all things ZGO at the Sacramento Book Festival on April 19, 2026. Come find me — and maybe go home with a signed copy of Insurrection before it officially launches.

Latest Musings

ZGO Book 3 Is Almost Here–Yikes
Estimated reading time: 2-3 minutes There's a moment while working on a story when it stops feeling like something you're writing and more like you're capturing something real. Something that's happening.…

What Readers Are Saying

This book is a page tuner with compelling characters, poetic prose, and very satisfying zombie battling action. Riesen builds a world that is post-cataclysm; a world figuring out how to navigate a vastly diminished human population and the vestige roaming hoards of zombies. Omega and her squad are mysteriously quasi human protectors of humanity whose commitment to each other is the best hope they have. Can’t wait for the next installment and learning more about the mysterious United Forces that command Omega and her team, and the ragtag human cultists who might yet be friend or foe.

Great part 1 of a new take on a post apocalyptic zombie future

Not only was it a great story with interesting characters, the writing was beautiful. So many sentences seemed more like poetry! The only downside is it will leave you wanting more. Can’t wait for the next book!

Beautifully Written!

Thoroughly enjoyed this book! Love zombies and apocalyptic characters and stories, and this author’s rendition hit the mark. Can’t wait for the next chapter!

Can’t wait for the next chapter!

Have look forward to and greatly anticipated this second book in the Zeta Wars and definitely not disappointed. We learn more about Omega, her history, her training and her abilities. One of the best follow up sequels I’ve read.

Great sequel

This book is worthwhile and I can’t wait the next episode. The tactics’ are realistic and the come alive in the book. I just couldn’t put it down.

Wow! What a story. This book is worthwhile!!

Join the Pluriverse

Subscribe and get a free short story

Get exclusive stories, upcoming book news, events, and special offers.

 

 


Buy Signed Books

Go to Top