"When Martin and Tawny's children disappeared, the couple barreled into the desert to track them down at any cost. Instead, they ran afoul of another group of rovers who claimed to be saving the world by traveling through a cave portal to the year 1492 to prevent the creation of America-an idea that defied belief until the grieving parents were lured into the cave and vanished in time and space. Now alone, Tawny must adapt to the wild marshlands of...