family, as the community of the university of california. and we will get through this. reporter: the father of slain sophomore, christopher michaels-martinez has a simple message for this grieving community. not one more person should have to die. not one more! reporter: his son, one of six killed when a gunman rampaged through this college town. there were red flags about elliot rodger, the gunman who detailed his plan to kill in a chilling 137-page manifesto called my twisted world. roéúi to mental health officials and his family minutes before he opened fire but it was too late for them to stop him. shots fired, shots fired. reporter: in ten minutes of terror at 12 crime scenes. 13 wounded three shot dead. at a sorority house and a local deli. inside of rogers apartment his two roommates and a visiting friend found stabbed to death.