The rise of Charles Manson and his "family," who are responsible for a series of famous murders in the late 1960s. Manson, a magnetic and mysterious man, attracts road-weary single mother Linda Kasabian to join his collection of outcasts on a ranch outside of Los Angeles. After murdering actress Sharon Tate, Manson and his followers are investigated by district attorney Vincent Bugliosi.
Una bomba poderosa explota en una oficina de abogados del centro de Los Ángeles y el terrorismo internacional es sospechoso del acto. El antiguo agente de la brigada de investigación criminal (ahora oficial para la oficina de investigación postal) Randall Batkinkoff cree que este caso es solo competencia de investigación de su departamento. Pero la política interfiere en sus averiguaciones.
