When eighteen-year-old Chess Putnam is offered the chance to train with a special team of investigators known as the Black Squad, she feels torn. She's never been a team player and hates how one male Inquisitor condescends to "the new kid." But at her first bloody crime scene, she gets a taste for investigation—and is hooked on the high. Though the seasoned Inquisitors consider the series of ghost murders random events, Chess starts to detect a pattern. Is a psycho killer summoning ghosts from the City of Eternity and using them as murder weapons? As Chess gets closer to the dark truth, she puts herself in grave danger and risks losing everything she's fought so hard for.