Diane Duane

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...

A novel “filled with very credible teen angst, morality, and an intriguing blend of science fiction and fantasy” from the author of A Wizard Abroad (School Library Journal).
 
Still recovering from an overly eventful vacation in Ireland, teenage wizard Nita Callahan is looking forward to some peace and quiet in her suburban New York home. Instead, her close friend Kit seems to...

Two teen wizards embark on an alien exchange program in this “hilarious and scary” adventure from the author of A Wizard Alone (Booklist).
 
Rest and relaxation—that’s what Nita Callahan thinks she’s going to get when she and her partner-wizard Kit Rodriguez go on a “cultural exchange” program. But nothing about wizardry—not even vacation—is ever quite that...

“One of finest current writers of speculative fiction pays loving homage to its Golden Age in this ninth title in the Young Wizards series.” —Kirkus Reviews
In the hotly anticipated ninth installment of the Young Wizards series, Kit Rodriguez and Nita Callahan become part of an elite team investigating the mysterious “message in a bottle,” which holds the first clues to the secrets of the long-lost...

"A fine fantasy . . . Beautifully and fully imagined"—sixth in the marvelously magical young adult series from the author of The Wizard's Dilemma (Booklist).
While Nita Callahan grieves over her mother's death, Kit Rodriguez 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...

Best-selling author Diane Duane has created a book full of magical mystery, suspense, and humor that is sure to delight Harry Potter fans. When Nita and Kit, two teenage wizards, lose a young friend, Kit goes searching for him. Meanwhile, Nita is grappling with mysterious dreams and disturbing messages. Soon she fears that the Dark Power, source of all death, is threatening to return to the universe.

An investigation into a simple cellular-phone fraud leads both Peter Parker and his alter-ego, the Amazing Spider-Man, to a fiendish plot: using unique counterfeiting equipment and a devastatingly large stock-pile of bombs, someone plans to destabilize the world's economy and destroy several major cities. The mysterious corporation CCRC is involved in this plan—and they have caused trouble in the past for Spider-Man and for the alien symbiote...