The Peculiar

Changeling Bartholomew Kettle, having been locked away by his mother to protect him from humans and faeries who would want him dead for being half-human and half-faery, witnesses another changeling being kidnapped by a beautiful and mysterious figure, and, after hearing of the bodies of changelings being found dead and marked with a red tattoo, he realizes he is the next target and must figure out a way to stay alive.