18 books • 6 series
Book #1: Sin Eater
Book #2: Revelations
Book #3: Legacy
Book #1: House of Diviners
Book #2: Order of the Black Sun
Book #1: The Tower's Alchemist
Book #2: Dark Rift
Book #3: Circadian Circle
Book #1: The Immortals
Book #2: A Discovery of Faeries
Book #2: Hechizos y Huesos
Book #1: The Wayward Wizard
Book #2: Hexes and Bones
Book #3: Witchbane