Carlos

In Pamplona, capital of Navarra, Amaia Salazar is called in to investigate the death of a baby girl. The baby has red marks on her face, indicating she has been murdered. According to the girl's grandmother, the father tried to run away with the body, uttering something about an offering. She also mentions the Inguma - an evil being of Basque mythology that kills people in their sleep. The investigation takes Amaia and her team to the nearby valley of Baztan, where there have been an abnormally high number of similar cases - and some procedural irregularities.