The Sorcerer of the North: Ranger's Apprentice Series, Book Five

The international bestselling series with over 5 million copies sold in the U.S. alone! Several years have passed since the apprentice and his master, Will and Halt, first met, and Will is finally a full-fledged Ranger with his own fief to look after. The fief seems sleepy?boring, even?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