In 1891, in a world transformed by 1799's Great Disruption--when all of the continents were flung into different time periods--thirteen-year-old Sophia Tims and her friend Theo go in search of Sophia's uncle, Shadrack Elli, Boston's foremost cartologer, who has been kidnapped.

When their families are violently kidnapped, Swift and Hawk--teen experts in AI and robotics--are sent on a life-or-death rescue mission by the secretive Mobius group that leads them straight into the hands of a dark and chilling enemy.

"Twelve-year-old Addison Cooke just wishes something exciting would happen to him. His aunt and uncle, both world-famous researchers, travel to the ends of the earth searching for hidden treasure, dodging dangerous robbers along the way, while Addison is stuck in school all day. After his uncle unearths the first ancient Incan clue needed to find a vast trove of lost treasure, he is kidnapped by members of a shadowy organization intent on stealing...

"Once a poor orphan, Rose is now an apprentice to the king's chief magician. But when the country's beloved princess vanishes, everything changes. As rumors of dark magic fly through the city, the king asks Rose for help. She must find the missing princess, before all is lost"--

When his best friend disappears from her bedroom in the middle of the night, thirteen-year-old Theo uses his legal knowledge and investigative skills to chase down the truth and save April.

Chasing the Skandian slave-traders who kidnapped Will and Evanlyn, Ranger Halt and warrior student Horace find themselves in the frozen northern islands, where they battle a ruthless black-clad knight as they attempt to rescue their friends.

Nancy Drew and friends Bess and George track a group of swindlers and kidnappers from New York to Mexico City to Los Angeles where they finally solve the mystery of the Triple Hoax.

When fairies steal her brother, thirteen-year-old Rowan Fox promises that in exchange for his return she will find the thirteen charms that the fairies have enchanted and hidden in the human world.

"In 2001, Eoin Colfer published Artemis Fowl, a hilarious and rip-roaring science-fiction/fantasy adventure about a twelve-year-old criminal mastermind who kidnaps a fairy, Captain Holly Short of the LEPrecon Unit. But these aren't the fairies of bedtime stories; these fairies are armed and dangerous. Artemis thinks he has them right where he wants them ... until they stop playing by the rules. The novel was an instant sensation and became the start...