This is book number 3 in the Throne of Glass series.
"Celaena Sardothien, heroine of the New York Times bestselling series, rises from the ashes to burn even brighter than before."
Celaena has survived deadly contests and shattering heartbreak-but at an unspeakable cost. Now, she must travel to a new land to confront her darkest truth a truth about her heritage that could change her life-and her future-forever. Meanwhile, brutal and monstrous forces are gathering on the horizon, intent on enslaving her world. Will Celaena find the strength to not only fight her inner demons, but to take on the evil that is about to be unleashed?
In this "USA Today" bestselling third book in the "New York Times" bestselling series, Sarah J. Maas again delivers the epic fantasy, heart-stopping pace, and heady romance that have won her readers the world over. Look for a teaser for the fourth book in the series, "Queen of Shadows," out in this same season