I absolutely love this show!
Not only deals with serial killers and what not, but it also deals with psychology, I also love it when they rank their "Badness", and even tell their victims and their biography.
My Dad never lets me watch this show, he said it's too bad for me, but I can't miss another episode of this show, each and every single one is really good, especially when it's about partners in crime.
I also hope that "Most evil" also deals with cults or any kind of groups and *cough* terrorists *cough*, that would be so cool.
I hope there are more episodes too come^^