As Bluejay -- Mo's fictitious double -- tries to keep the Book of Immortality from unraveling, Adderhead kidnaps all the children in the kingdom, asking for Bluejay's surrender or the children will be doomed to slavery in the silver mines.

Siblings Amy and Dan must find another way to outwit the Vespers when they target and kidnap Dan's only friend, eleven-year-old Atticus.

After her parents are kidnapped, Emma and her best friend Herbie set out on an adventure that takes them through a galaxy populated by pirates, monkeys, the tyrant Queen of Virgo, and other creatures, human and otherwise, as they try to rescue her parents and protect the mysterious Pyxis.

When Princess Marabel's twin brother, Marco, is kidnapped on their thirteenth birthday, Princess Marabel must defy expectations and prophecies, leave the castle for the first time, and face great danger to rescue him.

After glimpsing a hint of his destiny in a mysterious tapestry, twelve-year-old Max McDaniels becomes a student at Rowan Academy, where he trains in "mystics and combat" in preparation for war with an ancient enemy that has been kidnapping children like him.

Middle-schooler Madeline's hippy parents have been kidnapped from Hornby Island, Canada, by foxes and Madeline, upon discovering that she can understand animal languages, hires two rabbit detectives to find them.

Luc, a youth born with one ear and raised by a drunken father in fifteenth-century France, finds a better home with fisherman Pons, his sister Mattie, and their ward Beatrice, the daughter of a disgraced knight, and even after being kidnapped and sold into slavery in Africa, he remains remarkably fortunate.

As one of only two Asian students at Slackenkill High School, freshman Xing Xu exists on the fringes of adolescent society, counting the days until he's free. When a series of abductions rattles his adopted hometown, Xing as an outsider is able to see and hear things others cannot. As he moves closer to unveiling the kidnapper, he must choose between staying in the shadows and revealing a secret from his past which may prove his worth to his classmates....

Dink and his friends meet an exchange student, Sammi, who is actually the prince of an island country, hiding from those enemies who have kidnapped his parents and who may be after him as well.

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. Includes author's notes about the facts behind the story,