LOS ANGELES, CA – When Matthew Roberts set out to find his biological parents, he never expected the discovery to shake him to his very core.

Matthew Roberts discovered at the age of 10 that he was adopted, but did not begin tracking down his biological parents until 12 years ago.

An agency first found his mother, Terry, living in Wisconsin. She confirmed that she had given him up for adoption, but would not reveal why or who the father was.

Over the course of a chain of letters, Terry finally revealed that his father was in fact Charles Manson!

She explained that she had met him in 1967, and she was charmed, just like the rest of his followers had been. She decided to head to San Francisco with the Family.

However, she said she was raped by Manson at a drug-fueled orgy. She soon returned home to her parents and gave birth to Matthew in March 1968.

Upon seeing Matthew, Terry couldn’t believe how much he resembled his father. But Matthew was devastated by the revelation, saying he sunk into a depression.

Five years later, he decided to contact Manson, who is in Corcoran State Prison for life. Manson replied, and has since sent him ten handwritten notes, all signed with his signature swastika symbol.

Manson said he knew Terry, writing: “I remember her. We came back to LA on the super-cheap train.”

He sent Matthew his phone number, but Matthew has never called. “What I’m worried about is that you think you’re going to meet your birth mother or father and they’re going to love you and welcome you with open arms. But he’s not that kind of person.”

He explained, “If I did talk to Charlie on the phone, I would say, ‘I truly understand what it’s like to be you, more than anyone could ever imagine on so many levels’.

“He’s my biological father – I can’t help but have some kind of emotional connection. That’s the hardest thing of all – feeling love for a monster who raped my mother.”

Manson had three verified children, one of whom committed suicide in 1993. There is a list of children born from the Family that are also potentially his, but none have asked to confirm paternity.