>> i had no way of anticipating his reaction, whether it was outrage, whether it was anger, whether it was i don't believe it, it's all [ bleep ]. i was ready for just about anything. >> when i was contacted by lise olsen, whom i did not know, i had no idea that there had ever been a question about the result in the cantu case or that anybody was looking at it for that matter. >> i met with him in his office in a quiet room. we spent an hour. i took him through it step by step slowly. i showed him the fact that juan moreno had said that he had never believed that ruben cantu was the shooter. that he felt that he had to identify cantu because that's who police wanted him to identify. >> lise had also uncovered information about officers bill ewell and joe de la luz, who both had a vested interest in fingering ruben cantu as the killer. >> both bill ewell and joe de la luz had a history of disciplinary problems. bill ewell said to me that the