When Mulder was 15 years old his sister got taken by a ufo or so he thinks. And he thinks he will never see her (she was 4) when he was 16 he saw "her" the woman he loves his girlfriend. He had his birthday 4days after his sister got taken and he told his girlfriend. She thought he was crazy. She told the cops and thay told her that he not crazy. Thay saw the lights to when thay drove by. That night she went missing Mulder had to cry his self to sleep the next day thay found her dead in the middle of the woods thay thay told him he was not going to the funeral . He told his mom she got mad.