IT'S not only the victims who suffer at the hands of merciless serial killers – often the murderer's innocent family is also left at a loss.
That was the case for Jenn Carson, 48, who at eight years old found out her dad Michael Bear Carson was a ruthless killer who murdered at least three people in California with her step-mum Suzan Barnes.
The duo were infamously dubbed the San Francisco Witch Killers as they believed their victims had supernatural powers.
Jenn opened up about how their evil crimes had a devastating impact on her life in an interview with People.
"By nine, I viewed every adult as a potential killer. The whole world terrified me. I also feared that I would grow up and kill people," she said.
"I want people to understand that this type of shame is so corrosive. And that's why I tell my story."
Many of the most world's notorious murderers once led relatively normal lives with wives and children, who had no idea about their sickening crimes.
Here we take a look at other children of deadly monsters.
'Secondary victims'
Melissa Moore's father Keith Jesperson is currently serving three life sentences for strangling at least eight women to death, although he once claimed his victims numbered as many as 185.
Jesperson was called the Happy Face Killer as he left smiley face drawings next to his victims' bodies.
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