The series starred Charlotte Fich as DCI[clarification needed] Ingrid Dahl, an ambitious detective who is promoted to the role of unit commander seemingly on the basis of being female.

Each case portrayed in the show was loosely based upon actual sensational crimes such as murders, kidnappings, cross-border sex trafficking and child pornography.

The format of each episode balances the forensic process and an unfolding backstory that includes the somewhat ambivalent relationships existing between the unit members and their families.

[3] The series has been televised in Denmark (DR1), Sweden (TV4), Iceland (Rúv), Germany (ZDF), Australia (SBS), Croatia (HRT3), and the United States (MHz).

In Europe, the Scandinavian release, which contains all thirty-two episodes in one box set, includes subtitles in Danish, English, Norwegian and Swedish.