Rikke Nielsen is a minor character in the first season. She is played by guest star Regitze Estrup. She is a Volunteer Manager for the Troels Hartmann Campaign. She is questioned by the police about the murder of Nanna Birk Larsen because she collected the keys of the rental car where Nanna's body was found. She explains that the car was assigned to temporary worker John Lynge but he flees from the police when they go to question him.