The Spell Binder — L.T. Suzuki / Lorna T. Suzuki

In this sequel to Imago Chronicles: Book Five: Destiny's End, Markus' coronation as the new King of Carcross unites the surviving members of the Order for a grand celebration. When a prisoner escapes from the dungeons of Darross Castle during the ascent of the Hunter's Moon, it brings the festivities to an abrupt end. Not only is a madman on the loose, but a young prince is taken hostage and the evil Book of Spells has mysteriously disappeared.
In a race against time to unravel this secret and save the prince's life, a new acquaintance threatens to destroy old friendships and a former Wizard is seduced by evil once more. Meanwhile, a long forgotten entity promises to wreak untold havoc, threatening the mission and endangering the lives of all wishing to enter Spirit Wood, the haunted forest of the Shadow Mountains.