While looking into the disappearance of a young woman, investigator Jan Michelsen discovers a 10-year-old case from the same neighbourhood where a 17-year-old girl vanished on her way home from a party.
Louise realizes that Anders Kjeldsen does not kill alone but has a partner who is the dominant of the two. In the basement, Emma tries to persuade Stine to help her to escape.
Jan and Louise find a dress belonging to Natasha - the first victim - which Anders Kjeldsen had hidden. That same night, Anders tries to kidnap another woman. Stine Velin attends her big brother Mikkel's 40th birthday party and reveals a dark family secret.
The public appeal for information on Anders Kjeldsen leads to the identification of the third victim from the farm and an explanation of how all the women met their killer. Louise suspects he has a female accomplice.
Stine Velin is taken into police custody, but insists that she is also one of Anders Kjeldsen's victims and does not know where either Anders or Emma are.
