Thoughts for a Portal (Tales of Lentari, #4)

Steve and Sarah Miller find themselves back in the manor house—but it's 120 years before their time! The portal which delivered them into this mess is one-way, leaving them no way back to their present lives. Sarah has been kidnapped, Steve must return to Lentari for the special crystal necessary to create the two-way portal, and all of this is crucial to Steve's very existence. He meets his great-great-grandfather, who reveals that he is Lentarian, which means Steve has Lentarian blood too...