The 90-year-old Heinz Meyer is found shot in Ronehamn. Who would want to murder a 90-year-old? And why? Heinz Meyer was one of the German soldiers who came to Gotland after World War II, wounded in battles near the Baltics. At the same time, 500 concentration camp prisoners arrived on the island to receive care at the Lärbro military hospital. It was a ghost brigade of emaciated, severely mentally and physically traumatized prisoners who were placed in the same hospital as the German soldiers. The nurses were given strict orders not to speak to the concentration camp patients and had no idea what they had been through. It becomes Maria Wern's task to investigate the murder of Heinz Meyer, while wedding preparations are also underway. But what is happening at her children's summer camp also demands her attention. There is a girl, Mirela, who seems to be in distress. What has she been through?