In 2012, German Police are alerted to a death at a Dark Room in a German bar, investigations reveal that the man had been killed with liquid GHB, it's a crime that is linked to an earlier death, and future deaths follow.
It's an interesting documentary series, they are guilty of making it a little over long, it could have been condensed down into a 60 or 70 minute special, over three episodes it's a little too much.
You will watch it, to learn why, that's the main question, and the subject of the third episode, you'll want to know why he did what he did.
It's very, very sad, the poor victims died, for no real reason, the killer's motives seem so bizarre, a little more effort to detail the 'why,' would have helped, was it just for kicks? I don't believe that a German detective wouldn't have known what a dark room was, a cop in Berlin? It's a little unlikely.
Shocking hearing Miroslaw detailing what happened to him on the train, the guy was lucky to be alive.
The voiceover with the 'killer' detailing events doesn't quite work in a documentary format, it suits films, but not this.
7/10.