Police investigators Dan and Marianne Sommerdahl's 25th wedding anniversary is interrupted when a Slavic woman is found dead. The woman has given birth recently, and now every minute counts in the mission of finding the baby.

Dan and Flemming find out that a local woman had adopted the Slavic woman's baby and pretended to her husband that it was their own. But when the biological mother demanded her baby back, things got completely out of control.

When a mother is found dead on the local food market, Dan and Flemming find out that the woman, who is a lottery winner, has been a victim of a marriage swindler. They manage to capture the swindler's accomplice and male lover.

Dan and Flemming create a false identity for Marianne, who will pretend to be another lottery winner in order to get the marriage swindler out from hiding and hopefully caught. But the man has an alibi. Who is really the killer?

A businessman is found dead on the same day his company's accountant is reported missing. In the presumption that the accountant is the killer, the pursuit to find him begins. But it turns out the accountant is actually kidnapped.

Dan and Flemming find out that the relationship between the playboy entrepreneur and his partner in the company was on the rocks. Following this discovery, the duo considers him a suspect in the killing and kidnapping case.

The owner of Elsinore football club finds the club's representative dead two days before the final annual game. Not only is that shocking, it's also a disaster for the owner who struggles with the club’s poor financial situation.

After the suspected football player is released, he visits the rival team's star player at the hospital. It is clear that the two men have a secret. It turns out that the deceased has been blackmailing them.

Dan Sommerdaul is determined to do anything it takes to convince his wife Marianne to come back to him. But before he gets to that, he must uncover the perpetrator behind the murder of a world-famous guitarist.

A piece of information from an unexpected source complicates the murder case even more, as it leads Dan and his team to several women in the town who had been in unresolved romantic relationships with the deceased rock star.

When a boarding school teacher is found dead only days before an important school play, it is discovered that he was romantically involved with a police officer. Is it possible that the murderer is hiding in the police station?

When another employee from the boarding school is found murdered, Dan directs his suspicions at the school staff. But the evidence he finds there helps him realize that he had been looking for the perpetrator in the wrong place.

The funfair has come to Helsingør and soon joy, and laughter are replaced by screams. A high-ranking employee has been shot during his shift at the shooting booth, but as it happens in the middle of a turbulent shift change, doubt as to whether the killer got the right man quickly arises. Josefine is still accused of Otto's drug smuggling, but Dan does everything in his power to get her released.

The funfair is in many ways running on the edge of the law, so unfortunately, not everyone is equally willing to cooperate with Dan and Flemming. Marianne has found a foreign hair on the deceased, which with some effort may lead them to the killer. But what the police do not yet know is that a stalker is out there following the widow, Ene.

An international male top model is back in Denmark to close an important show during the fashion week, but shortly after his arrival, the party ends abruptly. His dead body is found on the beach, and since he had been a popular gentleman in the hours leading up to his death, the police struggle to figure out who last saw the young man alive.

Dan and Flemming make no progress in the case after questioning the model colleague Thomas. But, fortunately, it turns out the video equipment he stole contains important backstage recordings, which enlighten them about the deceased's last hours. Meanwhile, Dan's effort to get Josefine out of prison takes a dangerous turn.

A female local politician has been murdered in the Thai boxing club. When Dan and Flemming arrive at the scene, they discover that the blood from the deceased forms a pattern of a butterfly, resembling the club logo. The first to be interrogated in the case are the deceased's group of friends, who train in the same club. And they are not afraid to lie to each other nor to the police.

Roland has previously lied about his alibi, so can he be trusted when he claims that Rikke had the murder weapon on her when she met her killer? Roland is not the only one in the friend group with a motive, so Dan and co. must follow every lead, and with Benjamin on paternity leave, the others must run faster.

It comes as a shock to Dan Sommerdahl when he finds out who has been killed. He's hard to scare, but maybe this time he has been so consumed by the Josefine Sundby case that it ends up affecting his dearest ones? Illegal methods previously used in the investigation begin to have consequences.

The situation has now become so serious that forces from all over Zealand have been called in. Dan and Flemming's relationship is under such great pressure that Flemming wants to take the matter into his own hands. But if they are to solve the murder mystery, they need to cooperate. Whether the duo Astrid and Arne can lead them to the killer remains to be seen.