The notorious leader of the Manson Family cult behind the 1969 murders, depicted as having possible connections with Hollywood elites and law enforcement leniency that raise questions about his influence and protection.

The lead prosecutor in the Manson trial known for securing the convictions and co-authoring Helter Skelter, portrayed by O'Neill as having possibly manipulated evidence to maintain control over the trial's narrative.

A successful music producer whose rejection of Manson is speculated to have influenced the decision to target the Cielo Drive house, with doubts cast about his trial testimony and deeper involvement with Manson.

Associated with the CIA and influential in the Manson case, with his dual identities and connections suggesting an unexplored depth to the official narrative of the murders.

A renowned director and husband of Sharon Tate whose Hollywood connections and lifestyle came under scrutiny after the murders, explored for potential links to the motivations behind the killings.

An actress and the most well-known victim of the Manson murders, symbolizing the intersection of Hollywood glamour and the era's violence; her connections to Manson-linked individuals are examined.

A fiercely loyal follower of Manson and principal murderer in the Tate-LaBianca killings, with his testimony and the mysterious "Watson Tapes" suggested to have been carefully managed to fit the prosecution's goals.