Smith eventually asked a family friend “what would happen if it turned out to be a kid?” The woman replied ,”I think he would seriously need psychiatric help.” This wasn’t the answer Smith sought; clearly he wanted to know what the legal repercussions would be for a child who had killed another child. 5 days after killing little Robie, Smith admitted to his family that he was the killer. They sat down with Smith and begged him to tell them what happened. Tammy cried and asked Smith why he killed Derrick Robie and Smith wept in reply, “I don’t know, I don’t know.” watch young killer gives first-ever interview.