. >> but word of mouth had skewed the awful truth by the time 16-year-old deborah tate heard it. >> my boyfriend called my mother and he had heard there was a fire in benedict canyon and five people were dead, and it was rumored to be the house of sharon tate. ♪ >> sharon tate, debra's big sister. sharon tate's biggest film, valley of the dolls, was two years behind her already. now 26, she was known less for her acting than for her beauty, her style, and her husband. director roman polanski had recently shot to fame with "rosemary's baby" in which a woman discovers she may be carrying the child of the devil. in real life, sharon tate and roman polanski were expecting too. >> 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. >> and now debra, frantic to learn what happened to her sister, pressed her panic-stricken mother. >> mother, mother, what? tell me what. >> she must have been -- >> oh, she was out of her mind crazy, grief like you could not imagine. >> but it was no mistake, and the murders already grue