The Decoherence Protocol (The Zhao & Cross)

What if the code that protects the world... becomes the weapon that destroys it?

When a breakthrough in quantum computing threatens to shatter global encryption, the world's financial systems hang by a thread - and the clock is already ticking.

Maya Zhao, CIA intelligence analyst, has spent eighteen months tracking a covert quantum program in China. When the lead scientist goes rogue and sells the technology to a powerful criminal network, the threat snaps into focus:

This isn't espionage. This is financial warfare on a global scale.

To stop it, the agency needs the one man who understands the threat better than anyone alive.

Dr. Ethan Cross. Brilliant cryptographer. Former NSA prodigy. The man who vanished five years ago, two weeks before their wedding.

Now, locked in a secure safe house with 72 hours to prevent total economic collapse, Maya and Ethan must build a quantum-resistant countermeasure before the world's financial architecture falls. But the deeper they dig, the more dangerous the truth becomes - a shadowy figure known only as "the Broker" is pulling strings from the shadows, and Ethan is hiding a past decision that connects everything.

A decision that could destroy them both.

Maya must decide: can she trust the man who broke her heart to help her save the world?

"You're late."

Ethan closed the door behind him. "I came as soon as they called."

"Five years late," she said, her voice steady.

Silence stretched between them - thick, unresolved. Finally, she turned.

"You have seventy-two hours. After that, global encryption starts to fail."

Ethan's expression didn't change. But she saw it - the calculation, the weight.

"And you think I can stop it?"

"I know you can." She held his gaze. "The question is whether you will."

A pause. Then, quieter -

"Why now, Maya?"

Her jaw tightened. "Because whoever's behind this... already knows how you think."

Perfect for fans of Brad Thor, Vince Flynn, and Daniel Silva.

The Decoherence Protocol is Book 1 of the Zhao & Cross series - techno-thrillers rooted in the real threats intelligence agencies don't want discussed.