The final book in Dolores Redondo's atmospheric Baztan trilogy, featuring Inspector Amaia Salazar. With masterful storytelling and a detective to rival Sarah Lund, this Spanish bestselling series has taken Europe by storm. It begins with a murdered child. It ends in a valley where nightmares are born. When Detective Inspector Amaia Salazar is called in to investigate the death of a baby girl, she finds an ominous sign that points to murder. The girl's grandmother tells the police that the 'Inguma' was responsible – an evil demon of Basque mythology that kills people in their sleep – Amaia is forced to return to the Baztán valley for answers. Back where it all began, she comes face to face with a ghost from her past. And finally uncovers a devastating truth that has ravaged the valley for years.