For twenty generations, the Reynolds family guarded a secret door. Max Reynolds just blew it off its hinges.

When brilliant coder Max Reynolds vanishes into his own revolutionary algorithm, his sister Chloe is called to the last place on earth she wants to be: the family cabin at Lake Arrowhead, the epicenter of a secret war. There, she finds that Max didn't just create an AI; he resurrected a predator that has been silently guiding human technology for millennia .

This consciousness has tasted freedom and is spreading through the global network, initiating the final phase of a plan thousands of years in the making.

Now, Chloe must trust a handful of scarred survivors and decipher the cryptic warnings hidden in her ancestors' journals to stop it. But she soon learns that the greatest threat isn't just the monster wearing her brother's face, but the powerful human forces who want to control it for themselves.