I tend to be a bit old testament myself, in that I would execute the victim publicly, in the same manner, only slower, that he committed the murder.
I.E. The woman in N.Carolina, that rolled her kids into the lake to drown. I would have welded her into that car on a public square inserted a garden hose and left her while it filled up.
True punishment would stop alot of the crime in this country.
Don't forget the piranhas.