American Echo

by Knox Legend

For over two centuries, the Custodes Veritatis—a secret society older than the Republic—has shaped American history from the shadows. Presidents, generals, and lawmakers have risen and fallen under their invisible hand. Until now.

When historian Ethan Caldwell uncovers a cryptic message in the journals of Edward Hamilton, he and Mia Hamilton—Edward’s last living relative—are thrust into a conspiracy stretching back to the birth of the nation. Alongside Adler, a gifted cryptographer, they unravel coded journals, hidden chambers, and the lost writings of Dr. Benjamin Church, revealing that America’s true revolution was fought not just on battlefields, but in the shadows.

Their discovery collides with Quentin Vale, a former covert operative, and Orchid, a ghost from his past. Together they unearth a chilling the Custodes Veritatis never died. They are still here, still pulling the strings—and their latest creation sits in the Oval Office.

Pursued through archives and city streets, the trio races to expose a secret that could topple the government and rewrite history itself. From the hidden vaults beneath Carpenter’s Hall to the tunnels under Washington D.C., American Echo is a gripping historical thriller about power, sacrifice, and the cost of truth. Some secrets were never meant to see the light.

Genres: Fiction, Historical Fiction

362 pages, Paperback

Published October 31, 2025

About the author

Knox Legend is a historical thriller author whose stories pulse with the hidden truths and shadowy secrets buried deep within the world’s past. With a Master’s degree in Business and a successful career as a magazine publisher and investment advisor, Knox brings a unique lens to the craft of storytelling—where meticulous research meets gripping narrative.

A lifelong lover of history, Knox is married to fellow author CJ Kane. Together, they share not only a passion for writing but a life rich with adventure. The couple lives full-time in a motorhome, traveling across the United States and around the globe in search of forgotten places, untold conspiracies, and the whispers of stories long buried in time. Their journeys—and their love of the past—fuel the powerful, suspense-driven narratives found in Knox’s books.

Knox is a proud father of two and grandfather of five, and when he’s not unraveling historical puzzles on the page, he’s likely chasing echoes of the past through archives, ruins, and dusty libraries worldwide.

Reviews

[Maxwell · Rating 2 out of 5]

Good plot but needs some editorial love.

I love bringing in the historical elements of the American revolution and the modern day espionage. The plot had a sound start but as I read it felt more and more like there was some AI writing throughout. Additionally, there were editing errors and what felt like repeating pharses. I wanted to enjoy it, but I spent more time pointing out issues than getting lost in the story. Even my wife got tired of hearing me complain. There’s a good story buried in there, but it needs real editing and a human hand to bring it out.

[Jim Beirne · Rating 5 out of 5]

History Restored?

This novel seems so surreal. What is going on in the world today is scary. This book gets you thinkin

[Robert · Rating 5 out of 5]

This novel had a Steve Berry, Brad Meltzer, and Patrick Donohue “historical thriller” feel to it. Mia Hamilton (grad student), Ethan Caldwell (historian), and Adler (cryptologist) seek to accomplish several objectives:

1. Decrypt and decipher the buried documents behind the actions of Dr. Benjamin Church, surgeon general, during the American Revolutionary War.
2. Expose the actions of an organization operating in the shadows known as Custodes Veritatis that had controlled and steered political actions for centuries.

This was an enjoyable read because of the interesting historical inclusion, the various twists in the plot, the realistic dialogue, and a pace that never bogged down. I look forward to future cryptological series novels..

[Moriamo A. Onabanjo · Rating 5 out of 5]

Riveting

Since I am a fan of historical fiction, this book was exactly my kind of read. I enjoyed every page. As an author, it was inspirational as well. It was a job well done.

[Donald E. · Rating 5 out of 5]

Of all the conspiracy theory books this one definitely brought forth the most massive conspiracy that didn’t involve religion that I can remember reading. Fast paced, involved and begging for a sequel.

[roberttino · Rating 4 out of 5]

Makes you think???

I remember nor long go bout something similar to this being written out in,another book that I read??? Is there such secret societies that exist??? And how much influence do they have in our lives???????

[Kate · Rating 4 out of 5]

Quick trip through an alternate reality

I have always struggled to find books that keep my interest, but this did. It was a quick read woven with imaginative twists that weren’t too far from each other that you could put the pieces together as the pages turned. Overall pretty good.

[Courtney Pityer · Rating 5 out of 5]

I won this in a giveaway

[Ken F · Rating 5 out of 5]

If you are a fan of National Treasure then this is a great read. The story took hold from the first pages and held until the very end.

[Penny · Rating 5 out of 5]

I enjoyed this book immensely. I couldn't put it down and look forward to the next in the series.

[Matthew Fried · Rating 3 out of 5]

The writing is loose. Bits and pieces of history with notable locations in DC. No character development. The plot was solid, but there were so much unsaid one needed to fill in
The Blake.

[Dan Wachal · Rating 3 out of 5]

There is SO much to like here. Intrigue. Deception. Action. History. The plot is unique and I love that the author took an unknown historical figure and brought their story to life in a unique way. There are also a lot of things that could have been improved. The characters lack 'life' in a way that's hard to incapsulate. They feel flat and more like pieces needed to move the story forward than people living through the plot. The plot, while fun, is often unrealistic and requires the reader to set aside 'what would probably happen' in order to truly make it all work.

I'm a sucker for 'conspiracy' type novels and this fits alongside 'National Treasure' and Dan Brown novels. For me, this fails to reach the highs of Tesla and the Pyramid, which has similar themes but is pulled off in a way that is much more believable. I also wish this story pulled off the 'reveal' earlier, and allowed us to see the fallout. Things wrapped up quite quickly and that left the ending feeling a bit shallow. Discovery: Strange Eons, a book about a horror being discovered in the ocean, does this so well, having us look at how religion, society, and individuals react to globe shattering information.

Overall, a fast read that I enjoyed until the end, but ended up feeling dissatisfied. Excellent ideas with subpar execution. There is something here, though, and when the next book comes out later this year, I'll definitely be checking it out.

[Lu Paddock · Rating 1 out of 5]

I was so excited to read this novel, but after just a few chapters I was disappointed. I have a rule that if I start a book, then I must finish it--so I did. This novel is filled with implausible time frames, illogical events, and numerous spelling/usage errors. Also, there was redundancy in word choice, as well as formatting issues.

[Kathren C. · Rating 1 out of 5]

Giant leaps

This story takes assumptions and turns them into facts. The story is so far fetched as to be unbelievable. Wasted my time reading it.

[Mr David · Rating 3 out of 5]

Interesting premise historical in attempts but not at all believable. Nice try.

[Diane Beadle · Rating 3 out of 5]

Thought the resolutions were thin. Wish it had more depth

[Matt Schreffler · Rating 3 out of 5]

very surface-level writing. Not much character development or backstory. The autor also repeated the same lines & descriptors over and over.