One of the creepiest kinds of murders that I've read about or watched on TV shows was the random murder. A murder where a killer just randomly kills someone in a random part of the country for no reason. The murderer just goes into a town or city they've never been to before, commits a murder, leaves and never returns. The murderer can leave traces and clues but none if would be connected to anyone or anything in the area .... no motive, no reason, no connection, no witnesses, no nothing .... just a murderer who kills someone for no reason and disappears ... and is capable of doing it again and again without ever being discovered.
Israel Keyes admitted to at least one of these but probably did tens if not hundreds. Had caches across the country of supplies and weapons. He was only eventually caught cause he got sloppy and I think had a body or something on his property at some point. Didn't admit a lot to the police cause he didn't want media attention and for his daughter to find out, a lot of information is gleaned from missing persons that coincided with where he happened to be at the time (phone pings, plane tickets, etc), and he traveled a lot.
There's a long-running podcast detailing what is known about him, called True Crime Bullshit.
This is exactly what I mean ..... just because someone committed one murder and got caught, it doesn't mean that they didn't commit multiple other murders that will never be known about.
I know what you mean. I heard about this one guy Edward Surratt. He's pretty mysterious. He was only serving time for grape but admitted in 2021 to murdering multiple people in 70s. Oddly enough I haven't heard much about this guy. I would have thought this have would got more attention.