Production of the third season started at the end of 2014 and began airing in Denmark, Sweden and Finland on 27 September 2015. Following Bodnia's departure from the cast, it stars Helin, Thure Lindhardt and Nicolas Bro.
A new murder is commited involving a gruesome display of a family sitting at the table. Detective Saga Norén is tasked with the investigation together with a new Danish detective after the incarceration of Martin Rohde.
Saga and her new Danish colleague continues to investigate the murder of Helle Anker. They try to find Helle's son, but he's vanished without leaving a trace.
The police are certain that they are on the right track, but will they manage to lure the killer into a trap ? Saga is becoming more and more frustrated and is struggling with her relationships with her mother and her new boss at work.
Saga is trying to find the links between the killer and the victims, but a hostage drama speed up the investigation.
Lillian discovers a wound in Hans' mouth, which turns out to be a branding mark. The other two victims are examined again and they also have the same kind of branding mark. The perpetrator is probably branding his victims, but for what?
Saga and Henrik find a new link between the victims, which points to a new suspect. The investigation becomes more and more demanding, and the police chief increases the pressure on Saga and Henrik.
Saga and Henrik believe they know who may be the killer's next victim, and the search for the suspects is underway on both sides of the bridge
The hunt for the killer becomes more and more intense, Saga and Henrik are confident they know the killer's identity. But they get a new surprise when they detain the suspect.
Saga is forced to take time off from the investigation, but Henrik demands that she return. Together they manage to find the link between the victims and the perpetrator.