From the 60s-90s, there were many serial killers who were caught and put into custody. But then, it just kinda... stopped? I'm aware that the amount of serial killers is unknowable, but surely, with increases in forensic technology and surveillance, there would be even more caught. But there aren't. What happened?
Yeah as far as I know they haven't gone anywhere. Every time a police department is forced to test some of it's rape kit backlog they discover a bunch of serial rapists.
Cops suck. There are probably just as many serial killers as ever.