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The Final Cipher

The Final Cipher - The Last Message Trilogy

Paperback (26 Jun 2025)

  • $15.64
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Publisher's Synopsis

One last code. One final choice.


Rumours say Lionel Gage is dead. The truth is far more dangerous.

When Maya Dalton receives a mysterious thumb drive labelled 'THE FINAL CIPHER, ' she and Alex are thrust back into the shadows of their past. The file is tied to 'Nightfall, ' the off-books MI5 programme that trained Alex Rennie-and it reveals a chilling truth: 'Nightfall' never ended. It evolved.

Their search leads to a forgotten Cold War island turned digital fortress, run by 'The Architects, ' the hidden founders of global surveillance. And now, they're ready to unleash OBSIDIAN, a sentient system that will control the world under the guise of security.

As a storm rages, Alex and Maya infiltrate the island, facing traps, betrayal, and a gut-wrenching dilemma: destroy OBSIDIAN and risk global collapse, or let it live-and watch freedom die. But Maya has one last move.

A final patch. A fading signal. A system undone.

The truth gets out. But the cost is everything.

The Last Cipher is a heart-pounding conclusion about power, privacy, and the price of choice in a connected world.

Book information

ISBN: 9798231256754
Publisher: Hendry Publishing
Imprint: Hendry Publishing
Pub date:
Language: English
Number of pages: 142
Weight: -1g
Height: 203mm
Width: 127mm
Spine width: 8mm