Silverthorn (Riftwar Saga, Volume 3)

A poisoned bolt has struck down Princess Anita on the day of her wedding to Prince Arutha of Krondor. To save his beloved, Arutha sets out in search of the mystic herb called Silverthorn that only grows in the dark and forbidding land of the Spell weavers. Accompanied by a mercenary, a minstrel, and a clever young thief, he will confront an ancient evil and do battle with the dark powers that threaten the enchanted realm of Midkemia.