When King Jaron returned to Carthya he brought with him a device that supposedly shows the way to a great treasure, but now everything is going wrong: Castor, the son of an old enemy, is conspiring against him and wants the throne for himself, his fiancée, Imogen, seems to have turned against him, and the Prozarian Monarch has invaded his kingdom and taken Jaron's castle--but Jaron has a lot of experience at hiding and escaping, and he is not willing...

Ryan Quinn and his best friend, Danny, stowaway on a plane to Africa in an attempt to save two revolutionary musicians whose identities have been compromised by a traitor within the Emegency Rescue Committee, while Ryan's parents, and ERC operatives, try to track the turncoat back in New York.

Mrs. Bell challenges her science students to invent their own robots but when they start malfunctioning it becomes up to the DATA Set to deprogram the machines before an army of robots take over the school.

Zack and his father are invited to join the Nebulon Navigators as they set out to return a lost baby pterosaur to the Prehistoric Planet, where Zack sees animals and plants he had only read about in books.

Once again, Tucker Pierce and friends must fight for their lives against the better-equipped SYLO, and they will risk nearly everything to keep each other safe as the battle's climax nears.

When photographs of Peanut the dinosaur appear on the Web, Frank's father arrives in Wyoming with a story about the prehistoric reptile he saw nearby twenty years earlier.

A collection of stories about Connor, Risa, and Lev after they have destroyed the Proactive Citizenry and are, apparently, free to live in a peaceful future.

When supernatural things start happening in the house timid Andres and his parents just moved into, next-door-neighbor Desmond Cole, eight, comes to the rescue.

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,...

After Ranger's apprentice Will battles Temujai warriors to rescue Evanlyn, Will's kingdom of Skandia joins forces with rival kingdom Araluen to defeat a common enemy.