The Chronos Crisis (The Secret History #2)

Born in the darkest corners of the World Wide Web, the shadowy online cult known as the Listeners claims it can save the world. But its methods may bring humanity closer to destruction than salvation.

Two years after his first encounter with the Listeners, Simon is pulled back into a covert war he never wanted to fight. When his best friend Jack is left stranded in Istanbul after a mission gone wrong, a straightforward extraction spirals into something far more dangerous—a battle for the future of humanity itself.

Facing an enemy that always seems two steps ahead, Simon must uncover the truth before it's too late.