>>348980Ex private investigator here. They are not rare. They ARE VERY NUMEROUS. So many serial killers get away with it that it is hidden from the public. Not even in statistics will you find the homicides being connected to same type killers.
The rule of thumbs are:
Out before dark expect a tarp.
Lock your fucking doors, lock ALL your fucking doors. Get a big fucking dog, a gun and an offhand weapon.
Do not under any circumstances let your kids out at night during spring break or summer. Many of the serial killers we know of abduct and sell people beforehand. The human trafficking is twenty times worse now than it ever was. Kids have become stupid, docile and too trusting despite have knowledge at their fingertips. Do the thinking for them.
I'm telling you, there are at least a couple hundred serial killers in the US alone. It's incredibly fucked up right now.