You NEED to watch Monster. You watch the whole thing on YouTube.
It documents the life of Aileen Wuornos, popularly billed as “America’s first female serial killer.” (This isn’t true, of course, but she was the first female serial killer who received massive media attention and remains extremely infamous to this day)
It contains a MASTERFUL performance by Charlize Theron, who received an Oscar for her work. It was extremely well-earned. Charlize literally BECAME another person. She WAS Aileen. The difference between her ordinary, glamorous appearance and her appearance as the downtrodden, increasingly unstable Aileen is staggering. They don’t even look like the same person.
I can’t recommend this movie highly enough, it’s one of my favorites! You just need to watch it to get what I’m talking about.