"They vanish without a trace. Disappear into the night... Each year on the center island, one girl is chosen to be the next Mortal Queen of the idolized fae. The mortals praise these lucky girls, but their daughters are never seen again. The fae realm is eternal night, where disputes are settled by chess matches, power is acquired through the most devious kinds of trickery, and seven illusive kings roam. The fae hide their faces behind masks and guard...

"In a kingdom where magic has been lost, Fia is a rare changeling, left behind by the wicked Fair Folk when they stole the High Queen's daughter and retreated behind the locked gates of Tír na nÓg. Most despise Fia's fae blood. But the queen raises her as a daughter and trains her to be a spy. Meanwhile, the real princess Eala is bound to Tír na nÓg, cursed to become a swan by day and only returning to her true form at night. When a hidden gate...