Sadly...real criminal minds never end.
There is a show on Netflix called “Mind Hunters”. Is about the initial development of the FBI’s behaviorial unit learning about on serial killers. Pretty sick and graphic in spots, but pretty interesting.
The killers they interview are played by actors that are spitting images of the actual killers. They use transcripts of the taped interviews for most of the script during the show’s interview sessions.
“I can’t be certain - but I think I’m this way because of my mother. A mother should never denigrate her son.” (Or something like that.)