Sleep Well, Mommy

An unsettling psychological suspense novel, The Only Child follows criminal psychologist Seonkyeong as she navigates disturbing connections between a notorious serial killer and her young stepdaughter. As she delves into the mysterious pasts of her new family members and the killer’s own troubling history, Seonkyeong begins to uncover eerie similarities that unsettle her both personally and professionally. With masterful tension and an eerie atmosphere, the story explores the darker sides of human nature and the secrets that lurk beneath the surface.