AllMovie

This is the fourth in a series of films based on the police detective novels of Maj Sjowall and Per Wahloo. In this story, the police only have one witness to a series of crimes which have electrified the country, the rape and murder of a number of beautiful young women. Unfortunately, the witness is not terribly willing to come forward to assist the police since he is wanted in conjuction with the violent robberies he has committed. The police are assisted in their investigations by a beautiful psychologist (Magdalena Ritter), who helps them get a bead on both perpetrators.