Den som dræber - Fanget af mørket - Season 1

Jan Michelsen is investigating the disappearance of a young girl, Julie, and finding connections to a ten-year-old case. Louise Bergstein, an expert on serial killers, is put on the case.

Jan and Louise are trying to identify the person behind the kidnappings and suspects Anders Kjeldsen, a man who has previously been arrested for rape.

On a farm that Anders Kjeldsen visited as a child, Jan and Louise discover three women who have all got a finger cut off. Ella and Julie are trying to escape.

Louise realizes that the perpetrator is not working alone. Emma manages to get in touch with the house owner Stine and tries to persuade her to help her escape.

A dress that belonged to the first victim Natasha is found, and it turns out that Anders Kjeldsen has kept it hidden. Stine is losing her mind,

Anders is officially called for, and Louise suspects that he has a female partner. The three women on the farm are identified, and the police realize where they may have met their killer.

Stine is arrested, but claims that she is also one of Anders Kjeldsen's victims. Emma and Anders are still missing.

Jan and Louise find a dead body, and Louise is convinced that Stine's family is in danger. The tracks lead them to a haven, where the police have placed Stine's parents and brother.