Poll Suggestion: Real-Life Serial Killers

Intro: Which of these movies about real-life serial killers seems to be most interesting? Please discuss here. Suggestions: As it says only real serial killers. I don't want to have 5 movies of the same guy, but if there is another more accurate, or more significant movie, it's ok to place a sencond or maybe even third about the same guy. Please look at the examples that are already on the list before suggesting. Thank you. :D Only 1 movie per movie-series. Best the first one. List: https://www.imdb.com/de/list/ls599427155/ Poll: TBD