Anonymous e-mails arrive at the police. Their author demands that the killer of Hannеке Slут be found—the young employee of a law firm—and claims that the police leadership knows the killer’s name. Until the guilty party is brought to account, they threaten to shoot police officers every day.
After the unknown attacker carries out the threat and wounds a young constable in the leg, the investigation is assigned to Captain Benni Grissel from the Department of Especially Serious Crimes.