Darkness: Those Who Kill

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.

Five years ago, Alice Ejbye's 18-year-old son Markus was murdered by a serial killer who was never found; Alice is now seriously ill and asks criminal profiler, Louise Bergstein, the daughter of her best friend, to help solve the case.

A young man has been found in the woods, tortured and stabbed to death. Louise Bergstein and Karina Horup try to find evidence for whether the murder can be attributed to a serial killer who, after a five-year hiatus, may now be active again.

Louise and Karina know that William Fjeldby is the serial killer's victim, but his father clings to hope that he's alive. Johannes suspects his father's hiding something.

Alice offers a reward for information about who killed her son, but Karina and Louise struggle to find a useful tip; Peter takes his frustration out on his next victim.

Alice's death takes the investigation in a new direction; Karina gives Louise an ultimatum; Peter receives an offer from Leif; Johannes rebels against his father.

Karina and Louise return to the first victims to learn where they may have met their killer; Peter realises the police are getting closer and happens to see Louise again.

Unaware of who he really was, Louise has spent a night with Peter; an earlier clue resurfaces, moving the case forward; Peter gives Johannes a hard message to accept.

The police take Johannes to the police station; Peter meets with his ex-wife, who has returned from Singapore; Karina, Soren, and Torben desperately try to find Peter.

Louise is determined to continue working as a profiler and when a couple is found brutally murdered, she takes the case. She assists chief detective Frederik Havgaard, who is convinced he knows who the killer is.

Louise locates Bjørn's little sister, Maria. Maria's case worker suggests that Louise mentor the young woman. Frederik visits the Breidablik commune where Bjørn used to live with his mother and Maria.

The police hunt for Bjørn is intensified after the new murder. Frederik and Louise uncover truths about Bjørn's past after a revealing search at Pelle's.

Another crime is committed, and Frederik is convinced that Bjørn is the perpetrator. However, Louise points to another criminal profile. Bjørn turns to Louise and wants to share a secret that might close the case.

Louise has moved to Aarhus to make a fresh start, but the past catches up with her when she meets Frederik again. He involves her in a new case in which a disabled woman was found dead.

Louise and Frederik discover a connection between Bjørn and Alberte, who both grew up in the municipality of Breidablik. Louise moves into the commune undercover to help the police in their investigation.

Louise's cover gets challenged. Meanwhile, Frederik discovers that one of Jon's old friends, who also owned Breidablik, perished in a mysterious fire.

Louise and Frederik push Jon to take responsibility for his actions, but once again he takes advantage of his relationship with Alberte. Louise faces the past and finds peace.

Alongside her partner Frederik Havgaard, new criminal profiling teacher Louise Bergstein takes the case of a gang member gunned down on his release from jail. Meanwhile, an ex-criminal is dragged back into his old ways.

Forensic evidence concludes that the same person killed Patrick and Pernille. As Louise and Frederik probe the link between the victims, an old gang-related double murder emerges, suggesting a potential quadruple killer.

In their search for Kim, a clue leads Louise and Frederik to Sweden. Meanwhile, Kim hides with his stepdaughter in a remote cottage. Louise and Frederik track Kim down, only to discover yet another devastating crime.

Under interrogation, Kim confesses to the old double murder and the killing of his girlfriend, but not to the murders of Patrick and Pernille. Dismantling Kim's alibi, Louise has reason to come up with a new theory.

A revelation from Kim's stepdaughter puts the spotlight on Kim's old gangleader, Robin. Meanwhile, Kim is warned to keep silent, and an attack on Robin's gang hints at an imminent gang war. Robin flees with his family.

Louise believes Robin was killed by the same murderer as the other victims, but Frederik suspects his death was a stand-alone gang murder. However, Louise convinces Frederik that a fatal car accident links the killings

With Louise's world falling apart, the case is taken over by Jacob, Frederik's second-in-command. Jacob is determined to track down the killer, but must also contend with Louise - who soon discovers a shocking new lead.

Alongside Jacob, Louise tries to prove Gunnar's guilt and uncover his motive. It appears that the loss of his daughter in a car accident and the driver's short sentence was the catalyst for Gunnar's murderous campaign.