. >> smith: bradley's mother, susan, had come here from her native britain after she married brian. had two children-- first, a daughter, casey, and 11 yes lar, bdleyborn in 1987. susan was often on her own with the children isolated in rural oklahoma. was it a struggle for susan with you absent, you know, taking care of the kids? >> it was difficult, you know, being isolated. she never learned how to drive. she lived four miles, you know, outside of town. so i basically had to, you know, stock her up with food and supplies and stuff for the three-week period that i'd be gone. and that wasind a strain for her, because she was basically stranded. >> smith: at school, bradley kept to himself and didn't have many friends. he was small for his age and not very athletic, but he did well in class. after school, he'd spend much of his time alone with his computer. he was really into computers. >> yes. he would create his own web sites. his first web site, i think he did when he was, like, ten years old. he taught himself powerpoint, and at the yearly science fairs, he won, i think, three ye