Motherstone: O Trilogy #3

For Susan and Nick the adventure at last seems at an end. They are leaving the magical land of O, the scene of The Halfmen of O and The Priests of Ferris. But even as they prepare to step back to Earth, strange and evil forces reach out to ensnare them. For Susan - and for the Motherstone - there is one final, frightening task. Motherstone is the last thrilling book in Maurice Gee's saga of the world of O.