| Person | Type | Job | Role(s) |
|---|---|---|---|
 Hugh Ballantyne | Crew | Directing | Director |
 Bobby Beausoleil | Cast | Actor | Self - Former Associate of the Manson Family (voice) |
 Catherine Share | Cast | Actress | Herself - Former Member of the Manson Family (as Catherine Share aka 'Gypsy') |
 Charles Manson | Cast | Actor | Himself (archive footage) |
 Lynette Fromme | Cast | Actress | Herself - Member of the Manson Family (archive footage) (as Lynette Fromme aka 'Squeaky') |
Paul Watkins | Cast | Actor | Himself - Former member of the Manson Family: Filmed shortly after leaving (archive footage) |
 Zoë Wanamaker | Cast | Actress | Narrator |
 Aesop Aquarian | Cast | Actor | Self - Former Member of the Manson Family |
 Dianne Lake | Cast | Actress | Herself - Former Member of the Manson Family (as Dianne Lake aka 'Snake') |
Nancy Pitman | Cast | Herself - Member of the Manson Family (archive footage) (as Nancy Pitman aka 'Brenda') | |
Ronnie Howard | Cast | Herself - Susan Atkins's Former Cellmate (archive footage) | |
Thomas A. Phillips | Cast | Himself - Manson's Former Cellmate 1961-1967 (archive footage) | |
Brooks Poston | Cast | Actor | Himself - Former Member of the Manson Family (archive footage) |
Windy Bucklee | Cast | Himself - Ranch hand, Spahn Ranch | |
Robert Burbridge | Cast | Himself - Former LAPD Officer | |
 Sandra Good | Cast | Actress | Herself - Member of the Manson Family (archive footage) (as Sandra Good aka 'Sandy') |
Nancy Jordan | Cast | Herself - Friend of the Manson Family | |
Stephen R. Kay | Cast | Himself - Prosecutor, Manson Trial (as Stephen Kay) | |
Don Ward | Cast | Himself - Deputy Sheriff, Inyo County, California (archive footage) | |
| Person | Type | Job | Role(s) |
