In this story inspired by Jules Verne's "20,000 Leagues Under the Sea," Ana Dakkar, a freshman at Harding-Pencroft Academy, a five-year high school that graduates the best marine scientists, naval warriors, navigators, and underwater explorers in the world, makes astounding discoveries about her heritage and puts her leadership skills to the test against deadly enemies from a rival school.

The Alden children save an old woman's house, land, and all the animals in her animal shelter from greedy contractors.

The children, who are spending the summer in a lighthouse on the New England coast, are disturbed by a mysterious woman walking the lighthouse grounds. Jessie's dog Watch wakes up growling almost every evening at midnight, and Henry finds a puzzling note in the sand.

For Adam Reed, basketball is a passport. Adam s basketball skills have taken him from an orphanage in Poland to a loving adoptive mother in Minnesota. When he s tapped to play on a select AAU team along with some of the best players in the state, it just confirms that basketball is his ticket to the good life: to new friendships, to the girl of his dreams, to a better future.

While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.

While visiting the seaport town of Ragged Cove, Massachusetts, the Alden children find the ship's log of the Flying Cloud, shipwrecked in 1869, supposedly during a mutiny.

While on a cruise with their grandfather, the Alden children help discover who is behind the mysterious troubles of the ship--disconnected phone lines, engine trouble, a man overboard--and still have fun sightseeing, eating, and swimming.

When Frankie's mother died and her father left her and her siblings at an orphanage in Chicago, it was supposed to be only temporary - just long enough for him to get back on his feet and be able to provide for them once again. That's why she is not prepared for the day that he arrives for his weekend visit with a new woman on his arm and out-of-state train tickets in his pocket. Now Frankie and her sister, Toni, are abandoned alongside so many other...

When the Alden children accompany their grandfather to the Snow Haven Lodge, a series of odd occurrences threaten to disrupt the annual winter games.

The Aldens search for carousel horses that have disappeared from an amusement park.