To stop her sadistic grandfather, Saul, and his band of time travelers from rewriting history, Kate must race to retrieve the CHRONOS keys before they fall into the Cyrists' hands. If she jumps back in time and pulls the wrong key—o...

2013 Winner — Amazon Breakthrough Novel Award — Grand Prize and Young Adult Fiction WinnerWhen Kate Pierce-Keller's grandmother gives her a strange blue medallion and speaks of time travel, sixteen-year-old Kate assumes the old wo...

The Cyrists are swiftly moving into position to begin the Culling, and Kate's options are dwindling. With each jump to the past or the future, Kate may trigger a new timeline shift. Worse, the loyalties of those around her—including...

GRAND PRIZE WINNER Amazon Breakthrough Novel Award When Kate Pierce-Keller's grandmother gives her a strange blue medallion and speaks of time travel, sixteen-year-old Kate assumes the old woman is delusional. But it all becomes horri...

From the bestselling author of the Chronos series comes a page-turning novel of time travel, fast-paced action, and history-changing events. When two time-traveling historians cross paths during one of the most tumultuous decades of ...