Silver Gravity Books

The Decrypter and The Enemy of Wolves: The Calla Cress Decrypter Thriller Series, Book 15 - Rose Sandy

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Suspense, Thriller & suspense, Action & adventure, Technology, History, Arts, Business, Crime & mystery, Family, Fantasy, Horror, Sci-fi, Travel, Western, and Romance

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Ancient runes. Modern technology. A deadly countdown begins.

When digital wolves appear in augmented reality apps worldwide, infrastructure crumbles in their wake. As global cities plunge into chaos, operative Calla Cress recognizes something impossible embedded in the attack—ancient Nordic runes controlling modern networks.

For the radical eco-terrorist group calling themselves "the Wolves," technology has become a weapon against itself. Their charismatic leader, Freya Storme, believes she's found the path to restoring natural balance by cleansing the world of technological civilization. But unknown to her followers, a darker mind manipulates their cause from behind prison walls.

As Calla tracks the escalating attacks, the runes begin whispering to her, revealing a connection to her family's secret past as guardians of a power sealed away centuries ago. When Freya delivers a chilling message—"Your unborn child carries the mark of the wolves"—the mission becomes devastatingly personal. Her miscarried child's cells continue dividing, existing between worlds, making it the ultimate target in a conflict spanning millennia.

With global systems failing and time running out, Calla must assemble an unlikely alliance: her tactical partner and lover Nash Shields, tech innovator Jack Kleve, and even the enigmatic Freya herself, who realizes too late the catastrophic consequences of what she's unleashed.

As Arctic ice melts to reveal an ancient facility where technology and nature have impossibly merged, Calla faces the ultimate choice—repeat her ancestors' sacrifice to suppress this power, or attempt something unprecedented that could transform humanity's relationship with both technology and the natural world.

But failure means more than global collapse. It means losing the fragile new life growing within her that connects all worlds—past and future, digital and natural, human and something more.

Perfect for fans of James Rollins, Matthew Reilly, and Dan Brown, ENEMY OF WOLVES delivers heart-stopping action across stunning global locations while exploring the delicate balance between technological progress and environmental harmony.

Listen to the series here:

ABOUT THE SERIES

The Calla Cress Decrypter Thriller Series

Unlock the Code-Cracking Thrills of the Calla Cress Decrypter Series

Step into the action-adventure cyber-thriller universe where ancient secrets fuel tomorrow’s digital wars. Calla Cress, British Museum curator by day, elite code-breaker by night, stands between ruthless hackers and total network domination. From the shadowy corridors of London’s tech, secret agency underground to clandestine data bunkers half a world away, Calla unravels encrypted puzzles that could rewrite history … or end it.

Perfect for readers who devour technothrillers, spy fiction, and historical mysteries, each book in the Decrypter Series fuses real-world hacking, lost artifacts, and high-octane action into an addictive ride you won’t put down. Join Calla on her globe-trotting missions, decode the conspiracies, and discover why fans call her “the smartest heroine in cyber-espionage fiction.”

Crack the first cipher today and dive into a series where every chapter raises the stakes—and the heartbeat.

SERIES READING ORDER

The Calla Cress Decrypter Thriller Series Reading Order

Book 1: Secret of the Lost Manuscript

Book 2: The Mind Hacker

Book 3: Digital Eyes Only

Book 4: The Storm's Eye

Book 5: The Pythagoras Clause

Book 6: The Beale Ciphers

Book 7: Atlantis of the Sands

Book 8: Kingdom of Diamonds

Book 9: The Falcon Syndrome

Book 10: The Queen of Sheba

Book 11: The Calculus Warning

Book 12: The Cobra Paradox

Book 13: The Room Of Martyrs

Book 14: The Eiger Mosaic

Book 15: Enemy of Wolves

Book 16: The Pharaoh's Mask

READ A SAMPLE

Meet the Author

Meet the Author Rose Sandy

Rose Sandy writes adventure thrillers that blend espionage, technology, and history into fast-paced adventures. Her stories dive into the world of covert intelligence, scientific breakthroughs, and global conspiracies, perfect for readers who love suspense with a twist of "what if?" Whether you're on a morning commute or relaxing on a Sunday, her books promise to entertain, surprise, and transport you to hidden corners of the world.

A true globetrotter and lifelong communicator, Rose draws inspiration from historical archives, cutting-edge tech, and conversations with intelligence insiders. When she's not researching in the British Library or exploring Churchill’s War Rooms, she’s crafting thrillers that weave intrigue, action, and a hint of romance.

Discover more here or join her newsletter at subscribepage.io/Wuqko4.

Tropes You'll Love

Ancient technology hidden beneath history
Race against time
Strong female protagonist
Hidden heritage & destiny
Global chase & exotic locations
Science vs. greed
Seismic weapon & climate threats
Secret societies & operatives