After spending fourteen years lost to both the fae and mortal worlds, only to be dragged back into Faerie by the murder of someone close to her, October "Toby" Daye really just wants to spend a little time getting her footing. She's putting her life back together. Unfortunately, this means going back to work for Duke Sylvester Torquill of Shadowed Hills, doing her duty as a knight errant. That isn't the sort of thing that exactly lends itself to a quiet existence, and before she knows it, Toby's back on the road, heading for the County of Tamed Lightning in Fremont, California to check on Sylvester's niece, January.

Things in Tamed Lightning turn out to be a lot stranger than they seemed at first glance, and Toby's talent for finding trouble isn't doing her any favors. With Quentin—a young foster from Sylvester's Court—in tow, and the stakes getting higher all the time, it's up to Toby to solve the mystery of Tamed Lightning, or face a failure whose cost will be too high for anyone to pay.