however in our actual civilized so site, we are cred vej ill antes, we are then the cold-blooded killer. we try to kill the monster and in turn we become that monster. >> andrew was a young adult capable making his own decisions. his participation in this murder, although, he was certainly urged to do so by his sister, again he was a willing participant. and went along with there. >> i'm not saying i would have done what andrew did or that anybody would, but somehow a 19-year-old man, with an incredible sense of loyalty to his family was convinced that the only way it avenge his mother's death and to protect his sister, the only living relative he had, was to kill this man. >> cathy suh is in prison.