This book was a delightful surprise, Ysabel is an indirect sequel to Kay's 'Fionavar Tapestry' trilogy, involving a couple of the characters years later - the story is completely independent of that trilogy, however and can be read without any fore-knowledge.
It was a very fast-paced fantasy, with deft touches of Gaelic mythology. I believe this was written more for the young adult market considering the age of the protagonists but at no point is it at all "dumbed down."
I fully recommend this, it is Kay at near-peak, almost touching on the grandeur of 'Tigana'.
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