Historically, there have been murderers who committed mass murder when they were just teenagers. Homicide and brutal abuse are the result of an unhappy family and acts of violence that have continued from a very young age. Unknowingly, the parents have pushed their children into inhumane and cruel people.

Mary Bell- guilty at 10 years old

Born on May 26, 1957, Mary Bell was considered the youngest serial killer in the world at the time of the crime. Little Mary lives a life of misery. Her mother was a prostitute and she became pregnant with Mary when she was 17 years old. Mary's mother often "works" away from home and hardly cares for her. Even this mother cruelly wanted to kill Mary many times when she was born and deliberately set it up in accidents. More frightened, Mary was forced to have sex with her mother's guests. The young girl's mind was filled with only her mother's sexual and violent acts.