young girls supposedly under the spell of a svengali who allegedly mastered the murders. >> the '70s, just brutal violence on every front and anywhere that you look in america. >> at the time of a mass murder, there's a lot of media coverage, but usually after a brief period of time, the identity of the perpetrator tends to fade from the public's consciousness, but not so with the manson case. it was the biggest publicity case the d.a.'s office would ever have. >> the manson trial begins the 1970s on such an evil sadistic note. seven innocent people died. steve parent, a teenager, abigail foal ger abigail folger, folger coffee. and sharon tate. >> all of you know how beautiful she was. only few of you know who good