Have you ever known a murderer that got away with it?

Statistically, according to one of my criminal justice textbooks, 9 out of 10 murders in the USA are unsolved.

Have you ever known someone that got away with murder?

I knew someone who I believed got away with murder and more than once.
That person was my mother. A lot of people here and elsewhere online find this impossible to believe. I can't prove my mother killed people but I could make a good circumstantial case for it. People were afraid of my mother and they had reason to be.