On Aug. 9, 1969, Manson sent his devotees to a home at 10050 Cielo Drive in Benedict Canyon that was being rented by Tate, 26, and her husband, director Roman Polanski. (French actress Michele Morgan once owned the house.) The Valley of the Dolls actress, who was eight-and-a-half months pregnant, was stabbed 16 times, and an “X” was carved into her stomach. Polanski, her husband of 20 months, was in London scouting film locations.