Aiden works with the FBI in order to rescue his sister Meg, who was kidnapped.

When a twelve-year-old evil genius tries to restore his family fortune by capturing a fairy and demanding a ransom in gold, the fairies fight back with magic, technology, and a particularly nasty troll.

Aiden works with the FBI in order to rescue his sister Meg, who was kidnapped.

A series of burglaries in their quiet community upsets Alex's family, particularly his younger brother Benjie, but the bad guys are no match for the very protective family cat and Benjie's "spy" skills.

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.

In the near future, a boy with the ability to speak the language of cats sets out from London to seek his kidnapped parents and finds himself on a Paris-bound circus ship learning to train lions.

Catspeaker Charlie Ashanti finds himself on a boat to the Caribbean where he will be sold to the Corporacy, but his parents and lion friends are in pursuit, and he is determined to outwit his captors.

A ransom note received at Dragon Slayers' Academy sends Wiglaf and Angus to the rescue of the supposed victims but upon arriving at Keep Away Mountain Cave, they discover that an elaborate prank has put them in danger.

Cordelia, Brendan, and Eleanor Walker, aged fifteen to eight, must rely on a mysterious book to face the Wind Witch and her father, the Storm King, who have kidnapped Dr. and Mrs. Walker and brought them to a strange world of magic.

"The Vespers have crossed a line. Amy and Dan were devastated when the Vespers kidnapped seven Cahills around the world, holding them hostage until Amy and Dan delivered an impossible ransom. But at least the hostages were Cahills - members of the world's most powerful family, trained to face all odds. Now the Vespers have gone too far. They've kidnapped Atticus, an innocent 11 year old boy and Dan's only friend. Now Dan and Amy are in the struggle...