Keeper of the Lost Cities by Shannon Messenger is the first book in this fantasy series. In this book, Sophie Foster is living with humans. However, she soon discovers that she is an elf instead. She must leave her human family and learn how to live with the elves. But, between her human upbringing and stronger abilities, she still does not have a normal life. While she settles into her new home, she makes new friends who help her along the way. She must learn how to work with the Black Swan and hope her and friends’ special abilities are enough to save themselves from the dangers in the Elvin world. Several of my friends recommended this book to me, and I was only planning on reading the first book, but now I am hooked on the series. I especially like the character interactions in the book. If you are looking for a new fantasy series, I definitely recommend this one!