The Treachery of Beautiful Things by Ruth Frances Long

The trees swallowed her brother whole. And Jenny was there to see it. Years later, when she returns to the woods where Tom was taken to say good-bye at last, she finds herself lured into a world where stunning beauty masks the most treacherous of evils, and strange and dangerous creatures await—creatures who seem to consider her the threat. Among them is Jack, mercurial and magnetic, with allegiances that shift as much as his moods. Determined to find her brother, with or without Jack’s help, Jenny struggles to navigate a faerie world where nothing is what it seems, no one is who they say, and she’s faced with a choice between salvation or sacrifice—and not just her own.