>> hitchhiking in 1970s was a commone way to get around. these women got in the car withed him, i think he was a fantastic talker, he practiced hundreds of times before he committed his first murder. >> his first murder was on may 7, 1972. >> kemper picked up marianne and anita, they were on their way to stanford. >> something he talked about in detail when he was arrested. an interrogation a studied before meeting him. >> i saw two girls hitchhiking on the side of the road, they had a sign, they were going to stanford. these two girls need a ride. marianne and anita, i told them i was going to stanford, i was not. >> i don't think that people