Fifteen-year-old Daniel has followed in his parents' footsteps as the Alien Hunter, exterminating beings on The List of Alien Outlaws on Terra Firma, but when he faces his first of the top ten outlaws, the very existence Earth and another planet are at stake.

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.

Dink Duncan and his two friends investigate the apparent kidnapping of famous mystery author Wallis Wallace.

"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"--

Jack and his friends desperately search for the rest of the lost Loculi and confront the armies of Artemis in order to rescue Aly, who has been pulled back into Atlantis by King Uhla'ar.

Kidnapped and trained for his future destiny while a baby, but later raised in an orphanage, twelve-year-old Ernie must find the courage to save the Puddlejumpers, little people who live in a world below puddles, and lead them into battle against their mortal enemies.

Evanston, Virginia, twelve-year-olds Jonathan Murray and Shelley Brown are completely average and forgettable until they are recruited to help the League of Unexceptional Children save the Vice President of the United States, who has been kidnapped along with an important code.

Will is finally a full-fledged Ranger with his own fief to look after. The fief seems boring until Lord Syron, master of a castle far in the north, is struck down by a mysterious illness. Joined by his friend Alyss, Will is suddenly thrown headfirst into an extraordinary adventure, investigating fears of sorcery and trying to determine who is loyal to Lord Syron. As Will battles growing hysteria, traitors, and, most of all, time, Alyss is taken hostage,...

It started with a kidnapping. A shadowy organization known only as the Vespers snatched seven members of the Cahill family and demanded a series of bizarre ransoms from around the world. Thirteen-year-old Dan Cahill and his older sister Amy began a global treasure hunt, determined to bring back whatever Vesper One needed, so long as it kept the hostages safe. But when they deliver the last ransom, Amy and Dan discover Vesper One's terrifying endgame....

Rachel and Kirsty only have one more magic key chain left to find. They have to act fast to help Nora save baby fox cub Dazzle.