The first season started with a police investigation following the discovery of a dead body on the Øresund Bridge connecting Sweden and Denmark. It was first broadcast on SVT1 and DR1 during the autumn of 2011.
A woman is found murdered in the middle of the Öresund bridge - just on the border between Sweden and Denmark. Saga Noren from the County Crimea Malmo and Martin Rohde from Copenhagen police are called to the scene. What at first appears to be a murder turns out to be two. The upper body is from a well-known Swedish politician and the lower body from a Danish prostitute.
The killer reveals through the media that the murder on the bridge was only the beginning, and his purpose is to draw attention to unpleasant societal truths. Saga and Martin realise they are dealing with a ruthless killer.
To draw attention to the increased number of people falling through the cracks of society, the killer kidnaps a homeless man and demands a large ransom from four landlords for his survival. So what is the price of a human being after all?
The homeless man's survival depends on the landlords' willingness to pay the ransom. Saga and Martin see that they are dealing with someone who has planned his crimes down to the smallest detail. They wonder if they can catch the murderer off balance by doing something he doesn't expect.
The murderer has groomed schizophrenics to commit synchronised violent crimes in Malmo and Copenhagen, to highlight funding cutbacks for mental health care. Saga and Martin get a break in the case, a teenage girl who has run away from home. Could she be the witness that ultimately leads them to the murderer?
The failure of integration turns out to be the fourth problem. Copenhagen is in turmoil after a trial in which a group of policemen who assaulted an immigrant causing his death are freed. Another policemen, a witness to the assult who kept quiet, is kidnapped from his home and the search for him leads to riots.
The "Truth Terrorist's" fifth and final problem is our indifference to child labor. A school bus with five children disappears and the offender demands that five companies that indirectly exploit child workers suffer arson attacks. For every company attacked, one child will be spared. Meanwhile, Saga suggests that the evidence is pointing to the offender being a member of the police.
Saga and Martin anticipates and hearing a colleague suspected of being "Bromördaren". He proves to have an alibi for all the opportunities for crime, but is he really innocent? The offender is ready, he has succeeded in its aim to point out five problems in society. But Saga have a feeling there will be more. Maybe it's all about personal revenge?
Bit by bit in the complex puzzle are in place and the tracks and clues in the investigation leads Saga and Martin to a man who could be the perpetrator. While they come ever closer, it turns out that the case has suddenly become more personal for Martin than he ever could have imagined.
Despite her injury, Saga refuses to give up and will do anything to solve the case. Martin, who is personally involved, is doing everything possible to find the perpetrator in time. It becomes a cat and mouse game where it looks as if the offender will succeed in his personal revenge.