That was my first thought, lol.
I suspect a lot of people remember the story of Steven Stayner, the boy in the 1970s that was kidnapped by a child molester and held captive for 7 years. He ran away with Timothy White who had recently been kidnapped by the guy. He was killed in 1989 in a motorcycle accident.
I was just watching a recounting of the abduction case and they mentioned they were making a recounting of Cary Stayner, Steven’s brother. Turns out, the brother murdered 4 women in 1999, and admitted he had wanted to kill his girlfriend and rape & kill her two daughters, who were 8 and 11. He said he had fantasized about murdering women since he was 7 years old; that would have been way before his brother was abducted.