A Pair of Docks

Fourteen-year-old Abbey Sinclair likes to spend her afternoons in the physics lab learning about momentum and gravitational pull. But her practical scientific mind is put to the test when her older brother, Simon, discovers a mysterious path of stones that allows them, along with Abbey's twin, Caleb, to travel back and forth between their world and what appears to be...the future. Unfortunately, they're not the only ones who know about the stones, and they soon realize their lives are in da...