Inspired by a true crime case, the fictional six-part series quot German Crime Story: Gefesselt quot follows the story of one of Germany s most notorious serial killers, the so-called quot acid barrel killer quot Raik Doormann strikes fear into the Hamburg area in the early 八0s and 九0s, as he kidnaps, tortures and brutally kills women in his own nuclear bunker It is not until Nela Langenbeck, a victim counselor and later homicide detective, comes across clues to his deeds But at that time, women within the police department are regarded more as secretaries than investigators - so she initially earned headshakes for her approaches Against all odds, she eventually gets on the trail of Doormann and his gruesome deeds