The obsidian compass
"Mateo, Ruby, and Corey Hudson have lost their friend Jia to the villainous Captain Vincent's clutches, and now they're determined to bring her back to safety. But the Hudson kids don't have a way to time-travel without the Obsidian Compass, until Mateo figures out the secret com...
Katherine Tegen Books, an imprint of HarperCollins Publishers
|Series:||Time castaways 2|