Pretty much anyone who was at least in their teens (or older) at the time of the Tate-LaBianca murders knows the basic facts, and knows the name Charles Manson. The murders were horrific, and the fact that some of the victims were well-known celebrities, made it front-page news across the US, and beyond. And before the crime was solved, some of the bizarre aspects of the murders had people speculating about all sorts of crazy motives. E.G. because Roman Polanski had directed the movie "Rosemary's Baby", which involves devil worship, some people made the "leap" that it must have been devil worshipers who murdered his wife and friends.
Why is this documentary different?
Firstly, it goes all the way back to Manson's early (somewhat miserable) childhood, and takes an in-depth look at his life from that point, all the way up to the point where he originally began to gather up followers, and undertake his more well-known communal lifestyle.
Secondly, it contains a considerable number of new interviews, of people who had contact with Manson and/or members of his so-called "family". And more importantly, it contains (current) interviews with a number of the women who were members of the "family" at the time of the murders. These are women who were not involved in the murders, and only became aware of them after the fact, but at the time, they were still Manson devotees, and still under his Svengali-like influence. Of course, they are all in their 50's or 60's now, and can talk about Manson with a detached perspective (and with a bit of shock at how much influence he had over them at the time, and how naïve they were, due to their age and previous dysfunctional family lives).
Lastly, it provides an in-depth look at the subsequent (absolutely crazy) trial, even including a current interview with someone who sat on the jury. It also covers the crazy things that were happening outside the courthouse, while the trial was underway.
The six-hour (six episode) documentary spends its first half just documenting the details of Manson, and the "family", before the murders occurred. It provides a more in-depth understanding of how Manson preyed upon young, disenchanted girls, and was able to sell them on his communal life style, as a means of providing them with the "family" that they had never really had before. It goes on to show how once they were under his influence, he was able to get them to do just about anything, and convince them that it was the right thing to do, be it participate in orgies, or murder innocent victims, in his attempts to foster a race-war. And it closes out by covering the arrest of the murderers, their (many months long) trial, and the aftermath.
Bottom line, the documentary manages to cover a lot of territory in its six hours, and does so with a large number of more recent "first person" accounts, instead of simply stitching together content from old headlines, or years-old books. If you are at all curious about this "dark" event in our history, and how it came about, then I think that you will find that this documentary will "hold your attention". Just be forewarned that it does contain some graphic content, and as such, it might also continue to play on your mind, long after the documentary is over.