Great, very informative series, with lots of amazing never-seen materials. Deep and super interesting. 10/10. I am not sure why the rating i so low. For me, it is top quality true crime documentary. British and very well done. Interviews with survivors are so emotionally intense, there are many psychologists, and scientists explaining things, real interviews with families of serial killers, and many gruesome details presented which I never heard of earlier, even if killers are really well known by ppl interested in this kind of topic. So much better than most American ones, which are rather superficial.
