The Witches of Eileanan is a 410 page conventional fantasy novel first published in 1997 and written by the Australian author Kate Forsyth. This novel is the first book of a series that is also called The Witches of Eileanan. These are the other books of the series in order: The Pool of Two Moons, The Cursed Towers, The Forbidden Land, The Skull of the World, and The Fathomless Caves.
The Book summary reads as follows:
On the Day of Reckoning, the witches of Eileanan were outlawed--and violations of the new order were punishable by death. Eileanan's Great Towers, once meccas of magic and learning, were left in ruins.
Yet deep in the mountains, in I Yetet in the shadow of Dragonclaw, a young girl is being tutored in the old ways. Ignorant of her past, uncertain of her future, the foundling, Isabeau, will soon be forced down a dangerous path of prophesy, conspiracy, and magic. It is a world where dragons possess the key to ancient mysteries...where a lost prince will discover a strange and wondrous destiny...and where the ultimate battle between good and evil will be waged. A new Day of Reckoning is coming.