. >> sharon tate, deborah's big sister.iggest film valley of the dolls was two years behind her already, now 26 she was known last for her acting and then for her beauty, or style, and her husband. director roman polanski had recently shot to fame with rosemary's baby, in which a woman discovered she may be carrying the child of the devil. in real life, sharon tate and roman polanski were expecting to. she was so terribly excited, like a new mom to be creating the nice little home nest for the family to welcome the new life. >> now debra frantic to learn what happened to her sister pressed -- >> why, why, tell me why? >> she was out of her mind, crazy, grief like you couldn't imagine. >> but it was no mistake. the murders already gruesome. now -- >> this was at the home of roman polanski and his wife sharon tate one of the victims. >> with sharon tate, 25 year old coffee harris abigail folger, she had been working -- it was her body they saw on the front yard. beside her was her boyfriend -- 32, a sometime actor and old fri

. >> sharon tate begged her, please don't kill me. >> average kids from average american homes turned