"Wade, Lily, Darrell, and Becca fly from Texas to Germany for the funeral of an old family friend. But instead of just paying their respects, they wind up on a dangerous, mind-blowing quest to unlock an ancient, guarded...
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Bestselling author Tony Abbott returns with the next full-length book in the Copernicus Legacy series, a globe-trotting adventure packed with more riddles, puzzles, and secret histories. The hunt for Copernicus's first r...
Bestselling author Tony Abbott's epic new middle grade series, the Copernicus Legacy, begins with The Forbidden Stone, a thrilling adventure packed with puzzles, intrigue, and action. Fans of Rick Riordan and Ridley Pear...