Lachlan the Winged now holds the Lodestar and is Rìgh of Eileanan. But his battle to gain the throne is only the first of many that he and Eileanan must face. Maya, who wrought such terrible persecution upon Eileanan's witches and fairy creatures, has disappeared.

Despite having played a crucial role in his victory, Isabeau feels increasingly uneasy at Lachlan's court. She has taken responsibility for Maya's baby, Bronwen, and fears her brother-in-law's jealousy of the child. Once again she must take to the road, though the road she travels this time is unlike any other . . .

Under the watchful eyes of the dragons, Isabeau and Bronwen make their home at the crumbling Towers of Roses and Thorns deep in the mountains. It is there that Isabeau will discover her true heritage – and the true nature of the dragons.

As Lachlan seeks support throughout Eileanan, his armies continue to fight the invading Tìrsoilleirean soldiers. Meanwhile, Maya has kept herself well-hidden and makes plans to regain her baby and her power. However in the aloof Margrit of Arran she finds a dangerous ally, and in the end aid comes to her from a most unexpected direction . . .

The Cursed Towers is the third book in the series The Witches of Eileanan.