Title: The inventor's secret
Description: When twins Abby and Derick start junior high at the prestigious academy their grandfather founded, Cragbridge Hall, they discover firsthand the dangers of time travel and must find a way to save their parents, who have been sent to the Titanic the night it sank.
Subjects: School stories, Brothers and sisters, Fantasy, Fantasy fiction, Juvenile fiction, Boarding schools, Space and time, Fiction, Private schools, Grandfathers, Twins, Inventions, Schools, Siblings, Titanic (Steamship), Inventors, Children's fiction