From MHz Choice:

A criminal investigator and a forensic psychologist team up to track down serial killers in Copenhagen.

From MHz Choice (foreign language only, always with subtitles) you can stream 12 episodes of season 1 which is the only season available . Each episode lasts approximately 45 minutes. Each of the 6 stories encompasses 2 episodes.  Season 2 (2019) is mentioned in IMDB with another 8 episodes, but IMDB gives no further information about season 2.

Overshadowing all the other actors in the series are the criminal investigator Katrine (played by the very striking Laura Bach) and the forensic psychologist Thomas Schaeffer (played by Jakob Cedergren).  Oddly enough Jakob Cedergren also plays a character named Thomas in another MHz Choice offering The Sandhamn Murders. 

Once again, these stories are grim. Someone dreams up really gory crimes for the serial killers to commit. Expect lots of blood. Unfortunately the productions are excellent, well-acted and gripping. Is this some kind of guilty pleasure?

There is another series about serial killers from Acorn TV called “Wire in the Blood” starring Robsen Green as a forensic psychologist Dr. Tony Hill. Whereas Dr. Tony HIll is portrayed as a socially awkward, cleverly intuitive, and very eccentric misfit, Thomas Schaeffer is a loving family man torn between a normal life and his brillantly helpful involvement in horrible cimes.  Both series are downright gory.

Noone is perfect. One of my flaws must be watching this awful stuff.