Medium tanning/foxing present

From Dan Brown comes a fast-paced techno-thriller packed with code-breaking, government secrets, and high-stakes tension.

When the NSA’s most powerful code-breaking machine encounters a cipher it cannot crack, panic spreads through the agency. Cryptographer Susan Fletcher is called in to investigate what appears to be an unbreakable code—one that could render national security systems useless.

As the situation escalates, Susan is drawn into a dangerous race against time involving hidden agendas, deadly secrets, and a threat that could change the balance of power. With pressure mounting from all sides, the truth proves far more complex—and dangerous—than anyone expected.

✨ Genre: Thriller / Techno-Thriller / Mystery
🌶️ Spice Level: None

📚 Series: Standalone