Quicksilver

Do not touch the sword. Do not turn the key. Do not open the gate. Saeris Fane is good at keeping secrets. No one knows or about her strange alchemical powers, or the fact that she's been stealing from the Undying Queen for most of her life. But a secret is like a knot. Sooner or later, it's bound to come undone. When Saeris is caught stealing something she shouldn't, she inadvertently reopens a gateway between realms and is whisked away to a land of ice and snow. There, she discovers that the legendary Fae are not only real, but they're caught up in a centuries-long conflict that might get her killed... ...and she has accidentally bound herself to one of them. Kingfisher is undeniably powerful, but does that make him good? The warrior is clearly tormented by dark secrets of his own, and he will use Saeris's secret magic to protect his people, no matter what it costs him ... or her.