Sophia Maddox, granddaughter of notorious cult leader Charles Manson, has shared the profound impact of discovering her family's connection to the infamous figure. The revelation came in 2022 through a phone call from her father, Daniel Arguelles, who had been researching his own paternity.

Maddox, an aspiring filmmaker and actress living in Los Angeles at the time, described the news as "devastating." Her father had been using DNA testing to identify his biological father, eventually matching with Michael Brunner, who was confirmed to be Manson's son. Maddox recounted her initial shock, asking her father if the connection was to Ted Bundy before realizing the magnitude of the revelation.

"It was really dark," Maddox told Fox News Digital of her father's discovery. "He wasn't sure if I was ready to know. And my dad is not a dark person. He never taught me any dark things. So if he says it's dark, my first thought is it must be famously dark."

Her journey of understanding this dark heritage is now chronicled in the Hulu documentary "My Grandfather Charles Manson." The film sees Maddox connect with individuals who had direct ties to Manson, including former followers, in an effort to grapple with her family history.

Arguelles, born in 1959, learned he was the result of a brief relationship between his mother, Darlene Arguelles, and Manson, who was using the alias "Charlie Dear." Maddox and her father, described as "normal, working-class citizens" and artists, found themselves questioning if they inherited any of Manson's darkness, a notion Maddox actively refutes.

"People have asked me, 'Were you afraid that you inherited evil, that you were evil?' But my dad and I are very normal, hardworking people," she stated.

Manson, who died in 2017 at age 83, was convicted of orchestrating the 1969 murders of pregnant actress Sharon Tate and six others. He had cultivated a following of runaways and vulnerable individuals in the 1960s, directing them to commit murders intended to incite a race war, inspired by a distorted interpretation of the Beatles song "Helter Skelter."

Maddox's documentary delves into Manson's troubled past, exploring his childhood marked by his mother's absence and time spent in juvenile institutions. She discovered previously unreleased records detailing his harsh experiences in reform schools, noting that his treatment was not exceptional for the era but rather indicative of the survival mechanisms he developed.

"I think the biggest shock for me was how Manson's decision-making as an adult in his 30s can really stem from the survival mechanisms he learned from his childhood in these prisons," Maddox explained. She was particularly disturbed to learn that Manson, institutionalized for offenses like running away and theft, was housed with older, violent juveniles.

Maddox also shared that while filming the documentary, she and her father had a falling out due to the emotional toll of confronting their family's past. Arguelles, who had encouraged the film's creation, found the subject matter too painful.

Maddox clarified that her intention in exploring Manson's history is not to justify or apologize for his crimes, but to understand the forces that shaped him. She has also legally changed her surname to Maddox, a name she researched and found means "goodness," signifying a new life and ownership of her identity.

During the filmmaking process, Maddox reached out to the families of Manson's victims, describing these interactions as "very lovely" and finding understanding for her efforts to tell this story. She emphasized that her pursuit of understanding is not about excusing actions but about comprehending the influences that led to such violence.