Toby Daye - a half-human, half-fae changeling - has been an outsider from birth. After getting burned by both sides of her heritage, Toby has denied the fae world, retreating to a normal life. Unfortunately for her, the Faerie world had other ideas. Now her liege, the Duke of the Shadowed Hills, has asked Toby to go to the County of Tamed Lightning to make sure all is well with his niece. It seems like a simple assignment - until Toby discovers that someone has been murdering those closest to her and that if the killer isn’t stopped, the niece may be the next victim.