I am a grandmother. I live in South Carolina. My son who has full custody of my grandson came to visit from Texas. He was planning on returning to Texas to retrieve his property because of his separation(break up with girlfriend who is not the mother of my grandchild) and return for his son in a couple of days. In that time he was also supposed to arrange for he and his son to move to another location. It has been about a month now. In this time we have barely heard from him and when we did, we found out that he was attacked by his girlfriend and hit in the back of the head 10x with a hammer. My son was hospitalized and released. He made contact with us a couple of times but only to ask for money. He would discuss nothing further. We believe he is back with this woman of which my 13yr old grandson is petrified of. We also believe through his own prior admission to his son that he is heavy into cocaine. How do I sue to get custody (temp) to be able to provide my grandson with some stability as well as school enrollment? I need to know the first steps to take to start the custody process without expensive lawyers. Forms, processes, the fact that it is interstate custody and the fact that my son is now nowhere to be found. Thank you in advance for your help.What is the name of your state (only U.S. law)?