It's estimated there are 25-50 serial killers active in the US at any given time. There are also around 6k new unsolved murders each year. The point is that a m

It's estimated there are 25-50 serial killers active in the US at any given time. There are also around 6k new unsolved murders each year. The point is that a murder done by someone with no connection to the victim is very hard to solve.