During a summer vacation at the beach, thirteen-year-old wizard Nita and her friend Kit assist the whale-wizard S'reee in combating an evil power.

Fourteen-year-old Nita is in Ireland, spending the summer with her aunt. As a young wizard, Nita is fascinated by the forces at work in this ancient land. Sometimes, the world seems to be shifting sideways into another dimension. Layers of history, rich with battles between superhuman tribes, lurk beneath the surface of every moment. When Nita discovers that her aunt is a wizard, too, Nita realizes that this summer will not be a vacation. Ireland...

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.

Every eleven years, Earth's senior wizards hold the Invitational: an intensive three-week event where the planet's newest, sharpest young wizards show off their best and hottest spells. Wizardly partners Kit Rodriguez and Nita Callahan, and Nita's sister, former wizard-prodigy Dairine Callahan, are drafted in to mentor two brilliant and difficult cases: for Nita and Kit, there's Penn Shao-Feng, a would-be sun technician with a dangerous new take on...