A veteran Stockholm inspector Iris Broman life is turned upside down when her husband is gunned down in front of her. As she was the intended target, Iris is excluded from the investigation and the perpetrators remain at large. To escape the tragedy and rebuild her life, Iris moves to the southern Swedish town of Ystad, living in her half-sister's seaside cottage and taking up a new position as head of the cold case team in nearby Malmo, Sweden. On the same day Iris starts her new job, a skull is found in a local forest and the cold case unit becomes the focus of attention. Life is turned upside down for the locals, lives are intertwined, and truths are confused. A distraught father desperate for answers is convinced the skull is that of his 16-year-old son Benjamin, missing for 18 years. His pain is deep, and Iris can identify with him but is this really Benjamin? And as it stirs her own feelings of desperation for answers, she struggles to stay away from the Stockholm investigation of her husband's murder.