Sir Braden is headed to Banesmoor to hire out his sword. But when he gets there he is promised the lord's daughter in marriage as well as a huge dowry if he can capture the spy within the castle's walls.Portia-Maer is an elemental of the air, called a sylph. She can brew up a storm with the mere flick of her wrist. She is half fae and half human, and has been sent by her wretched stepmother to spy, as a battle is in the planning. Since one of Portia's powers is the ability to turn invisible, she has no problem carrying out this task.But when she is distracted by the landless knight who is promised a marriage and title he doesn't deserve, she drops her guard and he discovers her presence. To her surprise, the man says he knows her and that she has healed him with just a kiss.Can Sir Braden keep his commitment to not only marry a woman he doesn't love, but also expose the girl of his dreams as the spy? Or will Portia be able to convince him that there is so much more to her than meets the eye?Passion and power collide as two sides meet in a deadly battle. When dark secrets from the past are exposed, lives are not only threatened, but changed forever.