Borowski and the Dark Web

Jürgen Sternow, head of the cyber crime department at the Kiel State Criminal Police Office, was the victim of a murder attack. It is reasonable to assume that the perpetrator is to be found in the area of rapidly growing cybercrime. Commissioners Borowski and Brandt are entrusted with the investigation by the responsible public prosecutor. While Borowski first has to acquire special technical knowledge, Sarah Brandt is in her element as a former hacker. But how do you hunt a perpetrator who has no relation to the victim and who knows all the tricks to hide in the Darknet?