Everyone Celaena Sardothien loves has been taken from her. But she’s at last returned to the empire—for vengeance, to rescue her once-glorious kingdom, and to confront the shadows of her past…
She has embraced her identity as Aelin Galathynius, Queen of Terrasen. But before she can reclaim her throne, she must fight.
She will fight for her cousin, a warrior prepared to die for her. She will fight for her friend, a young man trapped in an unspeakable prison. And she will fight for her people, enslaved to a brutal king and awaiting their lost queen’s triumphant return.
The fourth volume in the New York Times bestselling series continues Celaena’s epic journey and builds to a passionate, agonizing crescendo that might just shatter her world.

An alternate cover edition can be found here.
After serving out a year of hard labor in the salt mines of Endovier for her crimes, 18-year-old assassin Celaena Sardothien is dragged before the Crown Prince. Prince Dorian offers her her freedom on one condition: she must act as his champion in a competition to find a new royal assassin.
Her opponents are men-thieves and assassins and warriors from across the empire, each sponsored by a member of the king's council. If she beats her opponents in a series of eliminations, she'll serve the kingdom for four years and then be granted her freedom. Celaena finds her training sessions with the captain of the guard, Westfall, challenging and exhilirating. But she's bored stiff by court life. Things get a little more interesting when the prince starts to show interest in her... but it's the gruff Captain Westfall who seems to understand her best.
Then one of the other contestants turns up dead... quickly followed by another. Can Celaena figure out who the killer is before she becomes a victim? As the young assassin investigates, her search leads her to discover a greater destiny than she could possibly have imagined.

It’s all-out war (and no-holds-barred romance) in the climactic conclusion to Carrie Jones’s bestselling series.
Zara is at the center of an impending apocalypse. True, she’s successfully rescued Nick from Valhalla, but it simply isn’t enough. Evil pixies are ravaging Bedford, and they need much more than one great warrior; they need an army. Zara isn’t sure what her role is anymore. She’s not just fighting for her friends; she’s also a pixie queen. And to align her team of pixies with the humans she loves will be one of her greatest battles yet. Especially since she can’t even reconcile her growing feelings for her pixie king . . .
Unexpected turns, surprising revelations, and one utterly satisfying romantic finale make Endure a thrilling end to this series of bestsellers.