On Nov. 19, murder mastermind Charles Manson passed away at the age of 83, but a documentary of his troubled life is already set to air. Charles Manson: The Final Words will look into all aspects of Manson’s life — not only as a criminal but also as a cult leader.

In an exclusive clip obtained by In Touch, Michael Channels — Manson’s pen pal — revealed that years before his reputation as one of America’s most sinister killers, Manson was an unwanted boy. In 1949, when the 14-year-old arrived at Father Flanagan’s legendary Boys Town, he was brimming with hope. Unfortunately, that hope didn’t last long. Watch the sneak peek of Charles Manson: The Final Words below.

Ben Gurecki, long-time friend of the mass killer, recently opened up about what he said in their final phone call before Manson’s passing. According to The Sun, in Manson’s final moments of the call — made on Nov. 12, shortly before a hospitalization that eventually lead to his death — the cult leader told his friend, “Gone in the sky, the dead but never die.” After the eerie quote, he told his pal that he has “love for all,” before the call was cut out by the prison where he has been for nearly 30 years.

While the documentary mentioned his “final words” in the title of the film, TMZ reports that much of the Rob Zombie-narrated doc will focus on his early life and will present a “new theory” behind why the murders happened. Manson was also actively involved in the production of the film and made countless phone calls to the crew from prison (where he was sentenced to life) that offer information about his “family” from his own perspective.

Charles Manson: The Final Words will air Dec. 3 at 9 p.m. EST on REELZ.

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