If these shows teaches us anything it isn't about criminals, evil masterminds, or col blooded killers. It teaches us about the importance of hiring a knowledgeable, experienced, and talented sound and vocal editor.
Interviewees were not taken seriously as their comments were spliced and diced to the point where their vocals were pushed through a gimmicky "phoneline" filter to give a "creepy vibe."
It failed spectacularly. Every four minutes or so, the gimmicky filter kicked in....in mid sentences, at the last couple of words at the end of sentences....basically anywhere and everywhere. The only time when you knew the filter would not be applied was whenever the main narrator was talking.
The vocal editing sounded like they hired the producer's 11 year old kick to take control of the sound board.
It's not worth watching. None of them are. They ruined every episode with the same gimmick. It is so thick with it, you lose focus of the actual story