Am rereading this series in preparation for the newly released fifth book, and it is well worth the reread. In the opening novel, our heroine Celaena, 18, is an acclaimed assassin condemned to hard labor in the salt mines. When the handsome Prince Dorian arrives to offer her a deal, she has no choice but to take it. And her arrival at the Glass Castle will lead the reader on a wild ride filled with fights and monsters and magic and ghosts and betrayal and romance. A pulse-pounding story for older teens, say, 16 and up.