Evelyn Reed only wanted to avoid the border patrols. But while navigating the gloomy woods, a silver thorn snags her sleeve-and tastes her blood. In an instant, the ordinary gray ash and pine transform into a sentient, terrifyingly beautiful fae forest. The roots interlace to block her escape, and the mortal world slams shut behind her.Now, trapped in the Silver Thorn Threshold, Evelyn faces two beautiful but menacing fae guards. They demand to know if she entered by invitation, debt, or blood. Armed only with her wits and a cautious understanding of dangerous old folklore, she refuses to surrender her full name to her captors. But begging is just entertainment to the fae court, and fighting is useless against an entire forest that listens to her every breath. Plunged into a deadly new reality, Evelyn must rely on her sharp mind to survive her crossing into the unknown.