A “heroic fantasy” (Kirkus Reviews) from a USA Today bestselling author: A mysterious earthquake catapults the modern-day Riverton family into the fantasy realm of Trimoria, where their latent magical abilities put them in peril from the reigning dark sorcerer.
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Seventeen-year-old Ryan Riverton and his family are exploring some ancient caves when an earthquake turns their world upside-down.

The Rivertons find themselves in a new land that they’re completely unprepared for. Subjects of an ancient prophecy that predicted their arrival, and their arrival doesn’t go unnoticed.

The tyrant that rules over this new land is looking for them.