The Merlin Trilogy
TheMerlin Trilogyis Mary Stewart's take on the Arthurian legend  in three books:The Crystal Cave,The Hollow Hills, andThe Last Enchantment. These books have Merlin, Arthur's wizard mentor, as their focal point, and the result is a charming, engrossing tale providing a unique perspective on a familiar tale. Her history is superb and richly detailed, her characterizations are masterful, and her plotting is perfect. You'll be entranced by this magical story.