He's a landless knight. She's an Elemental of Air.
The Sword: Sir Braden arrives at Banesmoor with nothing to his name but his sword, hoping to earn land, a title, and a future. Instead, he's offered an extraordinary bargain-the lord's daughter in marriage and a generous dowry if he can uncover and capture the mysterious spy who has slipped unseen through the castle walls. The Sylph: Portia-Maer is a sylph-half fae, half human-an Elemental of Air. She commands the wind, possesses the rare gift to heal with a single kiss, and can vanish into thin air. Sent by her cruel stepmother to spy on Banesmoor, Portia remains hidden from everyone... until her invisibility begins to falter and one handsome knight catches a glimpse of the woman no one else can see. Braden insists they've already met-and that Portia once saved his life with a single kiss. Though she remembers nothing of the encounter, she cannot deny the mysterious bond growing between them. Can Braden betray the woman who saved his life to secure the future he's always dreamed of... or will trusting the invisible spy cost them both everything?