Ruby (The Witches of Oz #4) (Paperback) (ISBN-13: 9781963999068)

The final stand against the Wizard approaches.

Desmona, Witch of the South, the last of the Cardinal Witches, has discovered the melted remains of her sister Zephyrine. With all of her sisters now gone, she is all that stands in the way of the Wizard and his bid to claim all of Pastoria.

It now falls to Desmona to keep Princess Ozma safe, and figure out a way to stop both the Wizard and his strongest witch, Glinda. Seeking refuge in a hidden kingdom may buy her some much needed time, along with new allies... but will a secret palace and an army of novice witches be enough to rid the world of the Wizard? Only time will tell, and it's quickly running out.