Kerstin Gier is the bestselling author of the Ruby Red trilogy, as well as several popular novels for adults. She lives in Germany.
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In Kerstin Gier's Emerald Green, Gwen has a destiny to fulfill, but no one will tell her what it is. She's only recently learned that she is the Ruby, the final member of the time-traveling Circle of Twelve, and since then nothing has been going right.... SEE MORE