Book #3 from the series: The Last Message Trilogy

The Final Cipher

A heart-pounding thriller and conclusion about power, privacy, and the price of choice in a connected world (The Last Message Trilogy Book 3)

About

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.