Chronal engine
Eighth-grader Max, his older brother Kyle, and new friend Petra travel in time to the Cretaceous period to rescue Kyle's twin, Emma, who was kidnapped from their grandfather's Texas ranch.
KidnappingBrothers and sistersPaleontologyJuvenile fictionFictionScience fictionGrandfathersTwinsSiblingsTime travelDinosaursChildren's fiction