This book was absolutely amazing, and I expected nothing less from Ruta Sepetys, as all of the books I have read of hers have been exceptional. The research that she puts into her historical fiction novels is so accurate and the novels are so real. FOS is no exception. This is a story that takes place right after the Spanish Civil War which I literally know nothing about. I didn't need to either because so much background was provided throughout the novel. The four main characters are all young adults in Spain living completely different lives and they all meet and end up connected in different ways. Daniel, Ana, Rafa and Puri all have problems and deal with them in different ways. It is sad but also hopeful. I absolutely loved this book! Highly recommend it!!! Worth every second!!! Looking forward to her next novel!!!!