by Dylan Callens (Author)

A vow of silence. A mission across centuries. One assassin holds the fate of humanity in his hands.

But a single mistake leaves Adam wounded and hunted, thrust into a cosmic conflict where shadowy forces can bend time itself. From war-torn ancient kingdoms to the edge of civilization, Adam must race to uncover the truth behind a looming apocalypse called the Sigma Event. As enemies close in-some posing as allies-Adam's strict vow of silence proves as much a curse as a calling. If he fails, billions of lives will be lost.

Fans of Red Rising and Doctor Who will devour this genre-bending thriller that weaves together history, philosophy, and heart-pounding action.

Grab your copy of The Silent Guardian today to embark on a time-travel adventure unlike any other.

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