The Brass Labyrinth (Atlas Conspiracy Cycle #4)

The Brass Labyrinth (Atlas Conspiracy Cycle #4) by Nick Thacker is out now, published August 10, 2026.

See if this book is on Audible

The Brass Labyrinth (Atlas Conspiracy Cycle #4)
Get Your Copy Now on Amazon
As an Amazon Associate we may earn from qualifying purchases, at no extra cost to you.
The Brass Labyrinth (Atlas Conspiracy Cycle #4) Release Date: August 10, 2026

Published

Some machines were never meant to be found. Some were never meant to stop.

Two hundred feet beneath the African rock, in a flooded labyrinth no one has mapped and lived to describe, something made of brass is still turning.

Nia Sato is the only diver good enough to reach it — and the last person on earth who should have to trust the man swimming beside her. Her brother David betrayed her once, sold what mattered most, and walked away with the money. Now he’s back, drowning in a debt that could take his name and his life, and he’s the only one who can read what the machine is trying to say.

But Nia and David aren’t alone in the water. A conservation foundation with limitless funding and a too-calm smile has followed the artifact to the cave mouth — and behind its paperwork sits a single carved sigil that should not exist. As the labyrinth begins to flood and the walls come down, the siblings discover the machine isn’t the prize. It’s a message. And whoever left it has been waiting a very long time to be answered.

To get out alive, Nia will have to do the one thing she swore she never would: need someone. To decode the machine before it’s lost forever, David will have to earn back a sister who has every reason to let him drown.

Down here, there’s no surface to run to. There’s only the next breath, the line in the dark, and a truth that will cost far more than either of them can pay.

The Brass Labyrinth is the fourth novel in The Atlas Conspiracy — a series of standalone-friendly conspiracy thrillers that fans of Clive Cussler, James Rollins, and Steve Berry will devour. One artifact. One buried secret. One question the world isn’t ready to have answered.

Get Your Copy Now on Amazon
📚 Ready to read? Secure your copy today and be among the first to enjoy this release.

Reader Anticipation Rating:
[Average Rating: 4]

Book Club Journal: Reading Log For Adults & Kids Who Love Books!
Book Club Journal: Reading Log For Adults & Kids Who Love Books!
Check Latest Price
We earn a commission if you make a purchase, at no additional cost to you.

Genre: Thriller

Nick Thacker

More books from Nick Thacker

Also releasing around the same time

🎧 While You Wait for The Brass Labyrinth (Atlas Conspiracy Cycle #4)

Prefer audiobooks?

Check Audible to see if The Brass Labyrinth (Atlas Conspiracy Cycle #4) is available to listen to.

Start a free trial and get your first audiobook free.

✔ Listen while commuting or relaxing
✔ Your first audiobook is free with the trial
✔ Cancel anytime

Start Audible Free Trial

Book Club Journal: Reading Log For Adults & Kids Who Love Books!
Book Club Journal: Reading Log For Adults & Kids Who Love Books!
Check Latest Price
We earn a commission if you make a purchase, at no additional cost to you.

Recommended Book Release Guides

Similar Books Liked By Our Readers