The Tower of Ravens: Book One of Rhiannon's Ride

The Skull of the World: Witches of Eileanan #5

The Shining City: Book Two of Rhiannon's Ride

The Fathomless Caves: Book Six of the Witches of Eileanan

The Forbidden Land: Book four of the Witches of Eileanan

The Heart of Stars: Book Three of Rhiannon's Ride