If it was unjustifiable homicide than they should be killed in the most brutal way possible.
I think if they were tortured in the same way they tortured their victim, but weren't killed, it would have a good outcome of their change in thought.
Think about it. If this said murderer is a psychotic maniac that killed his victim in the most brutal way possible, would killing him/her really be justice? Doing so would make those who were forced to pretty much recreate the murder monsters as well.
Now that I think about it, these people believe that they'll never get caught. So it wouldn't have much effect, if any.
Drop off a cliff into a burning pile of 5 billion unmarked bills
Justice is not revenge; which is why a Judge is the one to give a punishment, not the family that is related to the person who died.
They will be killed in they way chosen by the victims family .
hypocrisy are revenge aren't justice
They shouldn't be killed at all