I want to ruin my abusive father's life
What did your father do to you?
He killed my mom and raped my sister.
I can understand wanting revenge, but it isn't your place. Let the law decide his fate.
I'm going to get him killed one day.
I understand the extreme need for justice, but don't you want to be safe and free, out of jail or crime? If you leave it to the authorities, they can try him and judge him appropriately and he would never bother you again. You deserve peaceful justice and moving on with your life, not even more despair by harming others.