In this compilation of three separately published works, Shyanna, Rachel, and Cora, three thirteen-year-old mermaids in the Kingdom of Neptunia, have their friendships tested by secrets, worries, and other challenges.

The fifth graders of Liberty Falls Elementary have a reputation for trouble, but they still have a field trip to the mansion of Edward Minks (local inventor, founder of the town, and great-great-great grandfather of fifth-grader Eddie). While there, they search for secret inventions that are rumored to be hidden in the mansion--but they find that they are not the only ones searching, and somehow this class of trouble-makers must work together to thwart...

Twelve-year-old twins Nick and Eryn investigate why their mother and new stepfather are keeping secrets, why they are forbidden to meet their stepsiblings, and, most important, why their lives are in danger.

". . . as [Callum Hunt] begins his final year at the magical school [of Magisterium], his place is less certain than ever. With one unique exception, he is estranged from most of his friends. A furtive darkness still hounds him. And the greatest challenge he will ever face is right around the corner"--Back of cover.

Evan Pao and his family move to Haddington, Virginia in hopes of keeping his father's notoriety a secret, but a small southern town is not an easy place for a Chinese-American boy to fit in, and one kid, Brady Griggs, seems determined to make things difficult.

Avery Donaldson and her three best friends are happy to be at Storm Cliff Stables for the summer, especially since gold medalist Anna Wainwright is supposed to be there to give riding lessons--but Anna is nowhere to be found, and Avery is convinced something has happened to her hero.

The Littlest Bigfoot is a story of twelve-year-old Alice, a misfit who is ignored by her own family and shipped off to boarding school. She'd love a friend, and one day she rescues mysterious Millie Maximus from drowning in a lake. Millie, it turns out, is a Bigfoot, part of a clan that lives deep in the woods. Alice swears to protect Millie and her tribe, and the two girls try to find a place where they both fit in.

The Notebook of Doom is missing and Alexander and his fellow-monster hunters, Rip and Nikki, are convinced that the boss-monster has it; but is that monster the mysterious Principal Vanderpants, who is certainly behaving oddly, or someone else--and they need to figure that out quickly because a mistake could have deadly consequences for Stermont Elementary.

In 2041 twelve-year-old Dashiell Gibson is a resident of Moon Base Alpha, and at the moment he is faced with a number of problems: coping with the nasty Sjoberg twins, finding out how the commander of the base has managed to disappear from a facility no bigger than a soccer field, and dealing with the alien Zan who communicates with him telepathically from afar--and who is hiding a secret which may threaten the whole Earth.

In 1953 ten-year-old Octobia May lives in her Aunt's boarding house in the South, surrounded by an African American community which has its own secrets and internal racism, and spends her days wondering if Mr. Davenport in room 204 is really a vampire--or something else entirely.