0.451UNIDENTIFIED SIGNAL
A techno-Noir Cyber Thriller

CODECITIZEN

Haris Grigoriou

The boundary between human consciousness and the digital world is about to disappear.

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00
00 / INTEL BREACH

READ THE FIRST TRANSMISSION.

Experience the opening descent into the Athenian shadows before the flight to Brussels changes everything.

CHAPTER 01: THE SUMMONS [ CLICK TO DECRYPT / READ ]

He woke up abruptly to the noise of a garbage truck making its morning rounds. He had to get out of bed, but he had no desire to do so. The last few days at the service had made him completely loathe his job, and he couldn't wait to make the decision to leave that place for good. He finally dragged himself up and managed to reach the bathroom. The lightbulb was burnt out, and he hadn't had time to change it.

At least a little light came in through the air shaft window. It was already dawn. A wild face smiled back at him ironically. Several days’ worth of stubble bothered him, but he was out of razor blades. Another thing to note on the shopping list for the supermarket. His hair had started to grey at the temples, but at least he hadn't started going bald like his brother. He must have taken after his grandmother, it seemed.

He had started out as a Hacker at the end of the 90s, before the internet had even properly begun. Everything had evolved at incredible speeds, and after several adventures, he had been recruited into the Cybercrime department of the Hellenic Police. They hadn't left him many choices, after all.

His Commander, to give him one last chance, was sending him today on a "little leisure trip." He had to report to the headquarters of an IT service in Belgium to assist with a strange case. It had been made clear to him that there was no room for error and that he had to be flawless during this mission.

The meeting was the next morning at Synforge Dynamics. Two other investigators sat around the table: Patrick from Belgium, and Leo from France. Rolf, the company's CEO, introduced the nightmare they were facing:

"As you can understand," Rolf broke the silence, "we had the first casualty from Black Ice in history. The organization somehow managed to short-circuit our implant and cause an overload, resulting in it exploding and exterminating our engineer... You have seven days to satisfy our terms."

01
01 / THE STORY

NIKOS THOUGHT HE WAS INVESTIGATING A CYBERCRIME.

He was wrong.

When a mysterious digital anomaly leads Nikos into a web of terrorism, artificial intelligence and neural technology, the investigation begins to reveal something far more dangerous: a system capable of blurring the boundary between human consciousness and the digital world.

Someone is willing to kill to keep its secrets hidden.

At the center of it all is Helios—an extraordinary system whose true purpose may change the meaning of what it means to be human.

But Nikos isn't only trying to uncover the truth.

He's trying to find his friend.

And the deeper he goes, the harder it becomes to tell where the real world ends... and the digital world begins.

THE SYSTEM IS WAITING.

THE QUESTION IS: WHO IS INSIDE IT?
02
02 / RESTRICTED ACCESS

THE WORLD IS MORE CONNECTED THAN IT LOOKS.

SYS-01

HELIOS

A system at the center of a mystery that reaches far beyond ordinary AI.

SYS-02

NEURAL LINK

Where the boundary between mind and machine begins to disappear.

SYS-03

MIDNIGHT SUN

A command whose meaning should never have been discovered.

SYS-04

0.451

An unidentified signal. A number that refuses to stay buried.

★
EARLY DISPATCHES / CRITICAL PRAISE

AUTHENTIC TO THE SILICON.

What engineers, genre readers, and cyber-thriller fans are saying about the hardware realism of CODE CITIZEN.

"Finally, a techno-thriller written by someone who actually understands assembly registers, memory offsets, and neural interfaces. It doesn't treat tech like magic—it treats it like an industrial weapon."

CYBERSECURITY ARCHITECT Early Reader Verification

"The 7-day countdown has the relentless pacing of Gibson's best work, but grounded in Athenian backstreets and Munich server crypts. The 0.451 micro-stutter concept is unforgettable."

TECH-NOIR BOOK CLUB Genre Review Dispatch

"A terrifying look at what happens when brain-computer interfaces collide with zero-day exploits. High-stakes cybercrime writing at its sharpest."

EMBEDDED SYSTEMS ENGINEER Reader Community
03
03 / LOCATIONS

THE INVESTIGATION HAS NO SINGLE ADDRESS.

Six critical operational nodes. One global conspiracy stretching from underground server labs to the edge of the physical world.

01 / EAST ASIA

TOKYO

02 / BELGIUM

BRUSSELS

03 / GERMANY

MUNICH

04 / FRANCE

LYON

05 / FRANCE

ORLÉANS

06 / GREECE

ANTIPAROS

04 / THE BOOK

THE SIGNAL HAS A FACE.

CODE CITIZEN — a near-future techno-noir thriller by Haris Grigoriou.

CODE CITIZEN book cover by Haris Grigoriou
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CODE CITIZEN — Haris Grigoriou
A techno-Noir Cyber Thriller