The crime spree is resolved. However, many loose threads remain.

Things are brought closer to home when the criminal's mask is removed.

Because the detectives suspect that a policeman is involved, a profile of the killer is developed and several police fit the profile and a search among them begins. The hunt continues and a particular suspect is found.

A bus-load of children is kidnapped and are threatened to be killed. The police believe that the kidnapper is the killer, and the hunt continues.

A rogue policeman is killed by someone in uniform. The detectives believe that the killer for whom they are searching was the killer. They also now suspect that the killer may indeed be one of them - that he is actually is a cop.

The murderer has groomed a number of schizophrenics to commit carefully synchronized violent crimes on the same day in Malmo and Copenhagen.

Knowing the killer has carefully planned his crimes, Saga and Martin wonder whether they can catch him off guard by doing something he doesn't expect.

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?

Una policía sueca y un agente danés tienen que colaborar para encontrar a un peligroso psicópata que ha dejado el cadáver de su víctima en el puente que une Dinamarca con Suecia, por lo que la investigación atañe a ambas jurisdicciones.

Aparece un cadáver en la frontera que hay en el puente que une Dinamarca y Suecia. Se trata realmente de dos cuerpos cosidos, formando uno. Ahora, dos policías, uno de cada país, deben empezar a colaborar para descubrir al asesino.