The Dissonance - Shaun Hamill - Bog

"In high school, the three were students of the eccentric Professor Marsh, trained in a secret system of magic known as the Dissonance, which is built around harnessing negative emotions: alienation, anger, pain. Then, twenty years ago, something happened that shattered their coven, scattering them across the country, stuck in mundane lives, alone. But now, terrifying signs and portents (not to mention a pointed Facebook invite) have summoned them back to Clegg, Texas. There, their paths will collide with that of Owen, a closeted teenager from Alabama whose aborted cemetery seance with his crush summoned something far worse: a murderous entity whose desperate, driving purpose includes kidnapping Owen to serve as its Renfield"--