Sleepwalker

S4 E1: [Drömmen förde Dig Vilse] After intervening in a fist fight and getting beaten up herself, Maria heads the investigation of a woman who was murdered close to the place where Maria was assaulted. The murderer most likely witnessed what happened to Maria. The motives oscillate between revenge for infidelity and hatred towards homosexuals, and as the number of murders increase so does Maria´s frustration over the reluctance from neighbors and potential witnesses to collaborate in the investigation. Eventually it turns out that all the victims were patients of Erika´s new boyfriend, the psychiatrist Anders. Erika becomes suspicious and tries to escape from Anders. Only to be confronted with the real murderer: Anders’ big secret, his mentally disturbed son, who has escaped from the mental institution and now wants to kill everyone receiving love from his father, including Erika…