Helter Skelter is a 1976 TV film based on the 1974 book by prosecutor Vincent Bugliosi and Curt Gentry. In the United States, it aired over two nights. In some countries it was shown in theaters with additional footage nudity, language and more violence.
The film premiered with a household share of 36.5, ranking it the 16th highest rated movie to air on network television. The film was also shown on TV stations in Los Angeles, although there were reservations about this and fears of bad memories for the film appeared seven years after the Manson murders.citation needed The LaBianca house sequence was filmed at the actual crime scene. Much of the dialogue from the courtroom scenes was taken from the court transcripts. The 1959 Ford driven by Linda Kasabian on both nights of the murders was loaned to the producers by the Los Angeles Police Department.citation needed ........
Source: Wikipedia