Maggie Stiefvater is the keeper of a host of odd obsessions, threading her bestselling fantasy novels with vicious water horses, sleeping Welsh royalty, ley lines, and liminal spaces. She’s the author of books including the Raven Cycle, which continues this fall with the first installment of the Dreamer trilogy, Call Down the Hawk. In it she’ll further explore the Lynch brothers and the dark gift of dreaming, taking objects from your unconscious life into your waking one. I talked to Stiefvater about her early ambitions, books that feel like a fever dream, and why Call Down the Hawk is THE book for her.