After almost 25 years, this is still the definitive movie about the Manson murders (the only one, really) and it's still an interesting and at times downright disturbing experience.
Those of us who've devoured just about every scrap of literature about the case may find minor factual points & omissions over which to quibble, but in the end, "Helter Skelter" nicely sums it up in one big lump.
Steve Railsback is letter-perfect as Charlie Manson, and there are moments here that make the viewer wonder if the actor descended just a bit too far into the psyche of the "hippie death cult" leader. No matter, he steals every scene he's in.
Most of the other actors are capable enough, although the actresses portraying Patricia Krenwinkel & Leslie Van Houten leave a lot to be desired. Nancy Wolfe (Susan Atkins) & Jason Ronard (Paul Watkins) both deserve kudos for their performances, & lead actor George DiCenzo (Vincent Bugliosi) throws himself into his role with gusto.
This being a TV-movie from 1976, things get a bit wooden at times, & the law-and-order angle is played to the hilt (the courtroom sequences are great), which may well leave you wondering how various contemporary directors might fare with this saga.
Sublime trivia note: Nancy Burns, who plays "little hippie girl" Linda Kasabian was the lead actress in "The Texas Chainsaw Massacre" ... the girl that Leatherface chases off into the sunset. Amazing.