Wilder and Kägi are hunting a cop killer. He murdered an officer who caused the death of a teenager. The policeman was never brought to justice for it. Did the teenager's brother take revenge? When a bizarre video turns up, the case gets a new dimension... During a raid, the brutal policeman Ronnie Volkert causes the death of the teenager Soufiane Hamid - who falls from a balcony. The on..

A second policeman is murdered. He, too, had to pay for an unrepented crime. The serial killer is interrupted by two unsuspecting village policemen preparing for the third murder. In doing so, the policemen put themselves in mortal danger. But the two are troubled by their own secrets... On a dark winter day, police officer Gerry Engler, an IT specialist, is found dead with a gaping head wound. W..

Wilder and Kägi are feverishly searching for a female officer whom the serial offender has chosen as his third victim. Apparently, the woman let a drug courier freeze to death. Is the officer now threatened with going to the same fate? Wilder, Kägi and their team investigate day and night to prevent further killings of police officers. In the Darknet, they come across a forum in which a..

Jesch made a mistake for the first time: One victim survived seriously injured, but later dies in the hospital. Rosa Wilder now wants to lure the serial killer out of his hide with a trick. Can Jesch escape the investigators at this point? Jesch's third victim, driving instructor Koller, has survived the murder attempt - for now. Now the investigators just have to wait until Koller wakes up a..

The serial killer sets his sights on the investigators: he has Kägi in his power and has made the son of prosecutor Mettler disappear without a trace. Is it Wilder's turn now? But Jesch's series of murders could soon come to an end, as his neighbor, who fell in love with him, gets on his trail. In pursuit of the criminal, Rosa's colleague Jakob jumps in front of her car and gets..

Rosa Wilder now knows where Jesch lives. Together with prosecutor Mettler and Kägi, she seeks confrontation with the serial killer. Can they finally catch him? During an apartment inspection with Mettler, Rosa begins to have doubts about whether she can really imagine a future together with him. Rosa Wilder, Manfred Kägi and prosecutor Mettler follow a hot trace. At the same time, villa..