A locked storage unit.
A forgotten trunk.
Nikola Tesla's real obsession-finally unleashed.
Treasure hunter Jace Halden makes a living finding the one box everyone else skips. When he wins a dusty Nevada storage auction for an "antique trunk," he expects old clothes and broken tools. Instead, he finds notebooks written in Nikola Tesla's own hand-pages that don't match anything in museums or patents.
These notes don't just talk about electricity.
They describe harmonic gateways.
Stone circles as antennas. Church towers as vertical resonators. Factory coils and crystal prisms acting as field shapers in a global, hidden circuit. At the center of it all is something Tesla calls the Adjacent Plane: a structured "blueprint layer" beneath reality itself.
Jace brings the notebooks to Rina Calder, an electrical engineer with a conspiracy-hunter's brain and just enough fringe math to understand what she's seeing. Together, they test a "low-risk" diagram at an obscure stone ring in the Nevada desert.
The air hums. The world bends.
For a few seconds, an impossible gate opens... and shows them a pale, empty city of geometry on the other side.
They don't get to keep that secret for long.
Within days, three factions close in:
A nameless federal agency that wants "research cooperation" and full control of the keys.
A tech conglomerate that sees Tesla's system as the ultimate infrastructure weapon-and product.
A cult of modern mystics who worship Tesla as a prophet and see the gateways as humanity's ascension.
The notebooks aren't a madman's scribbles. They're a scavenger trail.
A resonant rod hidden in a church spire.
A buried coil in an abandoned factory.
A crystal prism under a public monument.
And finally, a tuning-fork-like device that can hold a gateway open.
As Jace and Rina race to find and understand each relic, the truth comes into focus:
Tesla didn't just try to open the interface.
He spent the rest of his life trying to shut it back down.
Because the Adjacent Plane doesn't offer power. It offers gifts: shortcuts, tools, "keys" tailored to each mind that touches it. Gifts that are really hooks.
With governments, corporations, cults, and an old-world order called the Wardens all converging on the final node, Jace and Rina face an impossible choice:
Assemble the full key set and risk giving the world a clean, repeatable way to rewrite reality...
Or break the circuit in front of everyone-and accept that they can never un-prove that gateways are real.
The Tesla Codex is a high-tension techno-thriller about resonance, responsibility, and the dangerous gravity of ideas. If you like secret notebooks, buried science, ancient sites as hidden hardware, and protagonists forced to choose between discovery and stewardship, this book will pull you straight through the circle.
The gateway doesn't need you to open it.
It only needs you to remember it exists.
