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.

In an alternative world in which every human being is accompanied by an animal familiar, the disappearance of several children prompts Lyra and her bear protector to undertake a journey to the frozen Arctic in pursuit of kidnappers.

When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

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.

When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

"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...

Thirteen-year-old Dan Cahill and his older sister, Amy, thought the search for the thirty-nine clues leading to the source of their family's power was over, but when Cahills are kidnapped by the Vespers, Amy and Dan find themselves with only a few days to fulfill a bizarre ransom request before their friends start dying.