Martin and fellow officer Luise investigate a suspicious fire at a vacation home. Meanwhile, legendary Spreewald character Anna Subata appears at Thorsten Krüger’s house, ominously predicting Gernot Voss’s demise. Sure enough, the local politician is soon found dead in his office, strangled and missing a finger. As the investigators delve deeper into the case, their path leads them to Maja, a patient at a psychiatric clinic who suffers from dissociative identity disorder.