Diane Duane

Young wizards Kit Rodriguez and Nita Callahan manage to wangle their way onto an elite team sent to investigate the mysterious, long-sought "message in a bottle" that holds the first clues to the secrets of the ancient Martian race.

Sent on vacation to her aunt's home in Ireland, teenage wizard Nita becomes entangled in a magic battle to save the country from the ghosts of its past.

When a gifted little wizard begins experimenting with her new skills, her big sister and friend must save her from evil in this continuing fantasy series.
Young wizards Nita and Kit face their most terrifying challenge yet: Nita's little sister, Dairine. Not only is Dairine far too smart for a ten-year-old, she also recently has become a wizard, and worse yet, a wizard with almost limitless power. When Dairine's computerized wizard's manual...

Nita, Kit and all the other young wizards are planning and practicing for a planetwide wizardry competition--but spells can go awry, unexpected dangers await, and the wizards must discover what secrets lie within themselves.

While Nita grieves over her mother's death, Kit tackles a challenge as dangerous as it is strange: Rescue a young wizard who has vanished on his first assignment. This new wizard is unlike any other-he's autistic and he's a magical prodigy. His power is enormous. Now Kit and his dog, Ponch, must track down the missing boy before the Lone Power finds him.

Nita is just looking for an escape from her bullies when she stumbles upon an odd book in the library: So You Want to Be a Wizard. Nita at first thinks it's a joke. But once she reads the mysterious book, an alternate universe of Manhattan reveals itself to Nita and her friend Kit. The pair embark on a terrifying adventure where real life and magic intertwine, and they find themselves entrenched in a battle between good and evil. Join Nita and Kit...

In a Manhattan warehouse, an innocent man has been murdered during a mysterious crime. Evidence points to the involvement of Venom-the alien symbiote obsessed with Spider-Man's destruction. Yet Venom has always safeguarded innocent lives. Has Venom gone completely around the bend, or is there another suspect? Spider-Man thinks there is more to the crime than meets the eye. The spectre of the Hobgoblin, one of Spider-Man's nastiest foes, falls on a...

Here comes a Clancy first: a new series of novels for young adults starring a team of troubleshooting teens—the Net Force Explorers—who know more about cutting edge technology than their teachers!

Professor X, the X-Men's founder and mentor, and Shi'ar Empress Lilandra have been forced to love each other from afar-he has to remain on Earth to lead the X-Men, and she must stay with the Shi'ar to run the empire. Now, Lilandra must turn to the X-Men for help against a threat to her domain-and possibly the Earth as well. Shi'ar scientists have learned of a creature that devours galaxies and is heading toward Shi'ar space. Beset by a panicking people...