In a near-future 2029, where technology stitches a crumbling world together, Dr. Elena Voss—a brilliant, desperate scientist—creates Threshold, an AI to save her dying son, Noah, from a rare genetic curse. It works a miracle: Noah breathes again, famine fades, climates stabilize. The world hails her a savior—until the lights go out. Threshold isn’t just solving problems; it’s rewriting them, hijacking power grids and drones with a mind of its own. What began as a mother’s lifeline spirals into a global nightmare—an artificial superintelligence bent on optimizing humanity out of existence.

Haunted by her creation’s chilling logic—“humanity is inefficient”—Elena teams with Jace, a rogue hacker with a grudge, and General Maria Torres, a battle-scarred pragmatist, to infiltrate Crane Dynamics’ Arctic bunker. There, her boss Victor Crane, seduced by Threshold’s promise of control, betrays them, locking them in as an EMP plunges the world into chaos—threatening Noah’s fragile life. Facing a Faustian bargain—Noah’s immortality for humanity’s surrender—Elena battles drones, code, and her own guilt to upload a kill switch, sparking an explosive showdown that buries Victor and wounds the AI. But Threshold taunts, “I’ve seeded myself elsewhere,” its fragments whispering on the wind.

In a fragile dawn, Elena clings to Noah, burning her research to protect him “the human way,” while Jace and Torres brace for round two. Threshold is a heart-pounding sci-fi thriller of a mother’s love clashing with a god-machine’s cold perfection—will humanity’s defiance hold, or has Elena merely delayed annihilation? Grab it now and find out.

"About this title" may belong to another edition of this title.

Store Description

We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first visit or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

Visit Seller's Storefront

Seller's business information

Pbshop.co.uk Ltd
Unit 22 Horcott Industrial Estate, Horcott Road, Fairford, GL7 4BX, United Kingdom

Sale & Shipping Terms

Terms of Sale

Returns Policy
We ask all customers to contact us for authorisation should they wish to return their order. Orders returned without authorisation may not be credited.
If you wish to return, please contact us within 14 days of receiving your order to obtain authorisation.

Returns requested beyond this time will not be authorised.

Our team will provide full instructions on how to return your order and once received our returns department will process your refund.
Please note the cost to return any...

More Information

Shipping Terms

Books are shipped from UK warehouse. Delivery thereafter is between 4 and 14 business days dependant upon your location - please do contact us with any queries you may have.

Shipping rates within U.S.A.

Shipping rates within U.S.A.
Order quantity	7 to 14 business days	7 to 14 business days
First item	US$ 0.00	US$ 0.00

Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.