Gary Ridgway

He grew up to become the most prolific serial killer in American history. Ridgway, also known as the Green River Killer, was convicted of murdering 49 people, but confessed the number was much higher, possibly in the 70s.

Dennis Rader

People should have realized that this boy would be trouble, as he grew up torturing animals and wearing women’s underwear. He ended up killing 10 people between 1974 and 1991, sending letters to news stations and police to taunt them of his crimes.