Thanks for the advice, people! Firstly, I live in England so laws differ. I also cannot get a protection order because the mother still lives there and I still go back there regularly in case confrontation arises and I need to step in again. The mother sleeps in our flat bur goes to the 'family house' everyday to feed her dogs and cook for her son.
I don't have proper Internet at the moment as I'm in between addresses. Can someone please find me a accurate and concise symptom/behaviour list of a sociopath? Also, in a list form would be ideal. I think that is what the father is. I looked up the word evil last night in various sources and sites. He fits the bill.