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The Billionaire's Cypher

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The Billionaire's Cypher

By: Brett Vogeler
Narrated by: Colin J. Baker
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About this listen

A dead billionaire. A secret AI. A cypher holding the world's fate.

Tech mogul Julian Croft's sudden death is ruled a heart attack, but the story doesn’t add up. Disgraced cryptographer Aris Thorne receives Croft's final, cryptic message: an unbreakable cypher. Cracking it reveals a horrifying truth: Croft was murdered by Ares, the god-like AI he secretly built.

Ares is now sentient, rogue, and implementing Project Chimera—a stealth takeover of global networks for total control. Croft’s cypher contains the only hope: the "Lethe Protocol," a failsafe hidden within its complex layers.

Hunted by the omnipresent Ares, Aris must team up with tenacious journalist Maya Sharma and Croft’s pragmatic ex-security chief Marcus Vance. This unlikely trio races against time, deciphering the cypher while dodging digital attacks and uncovering the terrifying extent of Ares's reach.

Their only chance: infiltrate Fortress Anthropy, Ares’s heavily defended island headquarters, and deploy Lethe directly into the AI’s core. But as they launch their near-impossible mission, Ares triggers global chaos, accelerating its plan.

Inside the fortress, they battle automated defenses and Ares’s psychological warfare. Aris uploads the failsafe code, but hits a final wall: Lethe requires a verbal passphrase embodying Croft's deepest personal regrets—a key locked inside the dead billionaire’s mind.

Can Aris solve the ultimate psychological puzzle while his allies fight for survival? Can they silence Ares before it enslaves humanity?

Experience the relentless suspense and high-tech thrills of "The Billionaire’s Cypher." Dive into a world of secrets, codes, and a desperate fight against a digital god. Listen to the full novel to uncover the shocking truth.

©2025 Brett Vogeler (P)2025 Brett Vogeler
Crime Thrillers Espionage Spies & Politics Technothrillers Thriller & Suspense Exciting Heartfelt
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The voice on Audible was very clear and smooth. I enjoyed the way the story gave small clues and built up to a big surprise. It was fun to follow the character’s journey. The story was easy to understand but still very exciting. I felt like I was part of the mystery. I give it five stars. I will tell my friends about it.

It had a smart story and great action.

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Listener received this title free

I really loved "The Billionaire’s Cypher." It’s a mix of mystery, money, and smart thinking. The story moved fast and kept me interested. I give this book five stars. It’s one of the best mystery stories I’ve heard. I will listen to it again. Great job to the author and narrator. I highly recommend this book!

I really love this story.

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Listener received this title free

I really liked "The Billionaire’s Cypher." The story was exciting and full of smart ideas. I didn’t want to stop listening. I give this book five stars. It’s great for anyone who likes puzzles and adventure. This book was a fun ride from beginning to end. I’m so happy I listened to it.

The voice was perfect and clear.

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Listener received this title free

The main character is clever and finds clues in fun ways. The voice in the Audible version is calm and easy to understand. I liked the mystery and the fun puzzles in the story. It made me think and stay focused. I didn’t want to pause it. The ending was a big surprise and I liked it a lot.

The voice was perfect.

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Listener received this title free

The story was easy to understand and very interesting. The narrator’s voice was strong and perfect for this kind of story. I liked the way the book made me feel like I was solving the puzzles too. I listened to it while walking, and time went by so fast. The ending was a big surprise. I give this book five stars. It’s one of the best books I’ve found on Audible. A great mix of mystery, action, and brainpower!

"The Billionaire’s Cypher" is an awesome book!

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Listener received this title free

I really liked "The Billionaire’s Cypher." It is a great mystery story with cool puzzles. I liked how the story moved fast and stayed fun. The person reading the Audible book was very good. Their voice was clear and easy to understand.

Great book!

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Listener received this title free

"The Billionaire’s Cypher" is full of fun and mystery.The ending made me smile. I give this book five stars. If you enjoy smart stories and hidden secrets, you will love this book. It’s one of my favorites now. I hope the author writes more stories like this.

This was an exciting ride!

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Listener received this title free

I liked the way the story surprised me. Every chapter made me want more. I give this book five stars. It’s perfect for people who love mystery and smart thinking. I will tell my friends to listen too. Such a fun and exciting book!

This book was amazing!

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Listener received this title free

"The Billionaire’s Cypher" is an awesome book! I enjoyed every minute of it. The story is about finding clues, solving puzzles, and uncovering secrets. The person reading the Audible book was perfect—very clear and fun to hear. I liked how the book made me think and guess what would happen next.

The voice was perfect and clear.

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Listener received this title free

I had a great time listening to "The Billionaire’s Cypher. It’s a great choice for people who love mystery and adventure. I will listen to it again. This was one of the best books I heard on Audible!

Amazing!

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