and murder. >> sharon tate quite naturally is screaming.ing not for her life, but for her baby's. susan atkins says, "i have no sympathy for you." ♪ ♪ ♪ (laughter) let's ask the experts. i feel as clean as a shimmering mermaid. that's because only cottonelle® has cleanripple® texture. designed to clean better... how cottonelle® do you feel? >> reporter: august 6th, 1969, bobby beausoleil was in jail, accused of murdering gary hinman. charlie manson was afraid bobby might talk, implicate him and the family. and then -- an idea. a crazy, horrible idea. >> they were watching some old james cagney movie where he's in the -- in jail for these -- for these murders and they do these copycat murders to prove that charlie manson decided to commit murders so similar to what they did to hinman, that the cops would have to think the real killers were still on the loose. and if they thought that, they'd release bobby beausoleil. but the key to these copycat killings, manson decided, was to find a high profile victim. >> if it