Ms. Kerr has written of medieval life in a magic world with dragons and a mysterious island which comes when it is called. There are dwarves, selkies, a dragon who was once part human and part elf, and clans who will kill each other for the rights to land and the honor of their goddess.

One clan, known as the Ancient People, have moved with the seasons for generations. Soon those migrations may come to an end. Their belief structure involves constant rebirth. Those with magic may be able to remember their past lives and use that knowledge to enhance their abilities in the present.

The Horsekin are a violent and hostile race who fight ferociously and want to destroy those who stand in their way. The battle between the clans is a big part of the story.

The plot was hard to unravel since I hadn't read the two previous books. The names are Celtic in origin and therefore, nearly unpronounceable. There are so many threads to the story that it is hard to give a synopsis of the book. Most of the threads were developed in the first two books and some of them won't be resolved until the fourth book is released.

Ms. Kerr's writing style is gritty and she shows the harshness of the life that her characters face. Fans of this series won't want to miss it. If you haven't started the series yet, go back and find the first two books before reading this one.