The King is dead. Long live the King. And death to his enemies.Bargained away to Dawn Court, Kat must play the part of a helpless human bewitched by the Day King. But beneath the veneer of submission, she's playing a far more dangerous game-spying for Dusk Court, and for the one person who holds her heart: Bastian.Separated from the woman he loves, Bastian has no time to rage against fate-or his queen. With his city on the brink of collapse and war brewing, he must uncover the truth before a devastating betrayal shatters everything he's fought to protect.As the enemy's hold on Kat tightens, secrets from the past threaten to unravel the courts' fragile alliance. Every step brings the couple closer to a deadly choice: risk everything for love-or lose it all to the lies that bind them.With danger, desire, and dark secrets, A Promise of Lies is the epic conclusion to Shadows of the Tenebris Court, an addictive romantasy trilogy ideal for fans of morally grey shadow daddies and heroines who refuse to give up-even when death seems set to win.