A day after murdering Sharon Tate and four others, members of Charles Manson's cult kill Leno and Rosemary LaBianca.

Sharon Marie Tate Polanski was an American actress and model. During the 1960s, she appeared in advertisements and small television roles before appearing in films as well as working as a model. After receiving positive reviews for her comedic and dramatic acting performances, Tate was hailed as one of Hollywood's most promising newcomers, being compared favorably with Marilyn Monroe.

Charles Milles Manson was an American criminal, cult leader, and musician who led the Manson Family, a cult based in California in the late 1960s and early 1970s. Some cult members committed a series of at least nine murders at four locations in July and August 1969. In 1971, Manson was convicted of first-degree murder and conspiracy to commit murder for the deaths of seven people, including the film actress Sharon Tate. The prosecution contended that, while Manson never directly ordered the murders, his ideology constituted an overt act of conspiracy.

The Tate–LaBianca murders were a series of murders perpetrated by members of the Manson Family during August 9–10, 1969, in Los Angeles, California, United States, under the direction of Tex Watson and Charles Manson. The perpetrators killed five people on the night of August 8–9: pregnant actress Sharon Tate and her companions Jay Sebring, Abigail Folger and Wojciech Frykowski, along with Steven Parent. The following evening, the Family murdered supermarket executive Leno LaBianca and his wife, Rosemary, at their home in the Los Feliz section of Los Angeles.